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Lesson 51
Estimating the
Quotient
Math3
Objective
Estimate the quotient of
2- to 3-digit numbers by
1- to 2-digit numbers with
reasonable results
Math3
Drill
Show the number wheel to
the class. Distribute “Show
me” boards to the
pupils. Instruct them to
round off each number that
the pointer indicates.
Review
Divide the class into five groups.
Let them complete the grid for 3
minutes. Make a table as shown
below. Let the pupils divide the
numbers along the first row
(dividend) with the numbers
along the first column (divisor).
Write the quotient in the grid.
Provide an example.
÷ 90 120 150
3 30
6
10
Dividend
Divisor
Presenting the Lesson
Let the pupils analyze the given
problem.
A jeepney driver travelled a
total distance of 325 km in
31 days. About how many
kilometers did he travel in
each day? (This is assuming
he did not have a day off and
the distance covered daily is
uniform).
Math3
a. What process will you use to
solve the word problem?
b. How will you represent the
problem into a number
sentence?
c. Can you think of a possible
solution to get the answer?
Look at the given: 325 ÷ 31.
Ask the pupils to estimate 325
÷ 31.
Lead the pupils in discovering
the steps.
Lead them to answer the
problem by asking questions.
Write the pupils’
response on the chart.
Math3
d. What is the divisor in the
given? How many digits are in
the divisor?
e. What about the dividend?
f. What is 31 when you round it
off to the nearest tens?
Math 3
Now, can you think of a
compatible number closer to
325 that can be
divided by 31?
For example, 21 ÷ 11, the
compatible numbers are 20 ÷ 10
because 20 can be easily
divided by 10. So the estimated
quotient of 21 ÷ 11 is 2.
Given Round
the
divisor
Think
of
Compa
tible
Numbe
rs
Estima
te
What
are
given?
325 ÷
352 ÷ 31
31
rounds
to
300 ÷
30
10300 ÷
30
325 ÷
31
10
Math 3
From your list, which among
these numbers is closer to 325
and can be a compatible
number to divide?
Now, what is your estimate
answer?
How far did the driver travel a
day?
Math 3
Does it mean that the driver
travels more or less than 10
kilometers in a day? Why?
(The driver travels more than
10 km in a day because 325 ÷
31 = 10 r 15, which is greater
than 10 km.)
If Karen pours 80
glasses of buko juice
into 9 pitchers, about
how many glasses of
buko juice will be in
each pitcher?
Math 3
Does it mean that the driver
travels more or less than 10
kilometers in a day? Why?
(The driver travels more than
10 km in a day because 325 ÷
31 = 10 r 15, which is greater
than 10 km.)
Math 3
Let us estimate the quotient of
80 ÷ 9. Look at the divisor. How
many digits do we have in the
divisor? What about the
dividend?
This time let us analyze the
dividend. Can you think of a
number which is close to 80?
Math3
What is the closest number to
80 that can be divided by 9?
what is 81 ÷ 9?
So, there will be 9 glasses of
buko juice in each pitcher.
(81)
 9
Math 3
Why is it important to think of the
basic facts in estimating the
quotient?
Is the quotient of 33 ÷ 4 greater
than or less than 8?
Now look at 33. This number is
close to what number? (32)
32 ÷ 4 = 8
Math 3
To check, let us multiply 8 and 4,
and you will have the same
answer.
Emphasize that, in estimating
quotients, we do not round a 1-
digit divisor.
Presenting the lesson
Math 3
Gawain 1
Kumpletuhin ang talaan sa
ibaba. Isulat ang angkop na
sagot sa bawat kolum. Gawin
ito sa inyong sagutang papel.
Bilang I-round
off ang
divisor
Mag-isip
ng Bilang
na
Compati
ble
Tantiy
ahin
(Esti
mate)
1. 184 ÷ 11
2. 338 ÷ 48
3. 508 ÷ 21
4. 677 ÷ 56
5. 899 ÷ 78
Bilang I-round
off ang
divisor
Mag-isip
ng Bilang
na
Compati
ble
Tantiy
ahin
(Esti
mate)
1. 184 ÷ 11 10 180 ÷ 10 17
2. 338 ÷ 48 50 350 ÷ 50 7
3. 508 ÷ 21 20 500 ÷ 20 25
4. 677 ÷ 56 60 660 ÷ 60 11
5. 899 ÷ 78 80 880 ÷ 80 11
Sagot
Math 3
Divide the class into five
groups.
Provide an activity card for
each group to perform.
Ask somebody from the
group to report their output.
Group 1 1. 25 ÷ 6 = __________
2. 274 ÷ 9 = __________
Group 2 3. 41 ÷ 7 = __________
4. 526 ÷ 12 = __________
Group 3 5. 65 ÷ 8 = __________
6. 615 ÷ 28 = __________
Group 4 7. 74 ÷ 9 = __________
8. 479 ÷ 18 = __________
Group 5 9. 85 ÷ 5 = __________
10. 285 ÷ 5 = __________
Math 3
Activity: Read and answer the
activity below. Give this
problem one at a time. Let the
pupils answer each item for one
minute.
What basic division fact can
you use to help you estimate
the quotient of 14 ÷ 5? Explain.
Math3
Possible answer: 15 ÷ 5 = 3.
Since 14 is close to 15, the
quotient is about 15.
1. Is the quotient of 49 ÷ 6
greater than or less than 8?
Explain.
(Answer: 48 ÷ 6 = 8, so 49 ÷ 6 is
greater than 8)
Math3
2. Is the quotient of 53 ÷ 9 greater
than or less than 6? Explain.
3. Is the quotient of 41 ÷ 7 greater
than or less than 6? Explain.
(Answer: 54 ÷ 9 = 6, so 53 ÷ 9 is
less than 6)
(Answer: 42 ÷ 7 = 6, so 41 ÷ 7
is less than 6)
Math3
a. How did you do to get
the answer?
b. Why is it important to
round off the divisor in
estimating quotient?
Math 3
Gawain 2
A. Isulat ang pinakamalapit na
bilang sa 38 na kung hahatiin
ng bawat bilang sa ibaba ay
walang matitira.
Math 3
1. 4___________
2. 6___________
3. 8___________
4. 5___________
5. 9___________
A.
Sagot
1. 40 3. 40
2. 36 4. 40
5. 36
A.
Math 3
B. Isulat ang tinantiyang
(estimate) quotient sa bawat
bilang.
1. 19 ÷ 6
2. 29 ÷ 4
3. 35 ÷ 4
4. 68 ÷ 8
5. 93 ÷ 5
Sagot
1. 20÷5 = 4
3. 36÷4 = 9
2. 28÷4 = 7
4. 64÷8 = 8 or
72÷8 = 9
5. 95÷5 = 19
B.
C. Isulat ang tinantiyang
(estimate) quotient.
1. 119 ÷ 23
2. 320 ÷ 80
3. 431 ÷ 61
4. 753 ÷ 90
5. 821 ÷ 89
Sagot
1. 120÷20 = 6
3. 420÷60 = 7
2. 320÷80 = 4
4. 720÷90 = 8 or
800÷100 = 8
5. 810÷90 = 9
C.
Math3
For additional activity, let
the pupils estimate the
quotient of the following.
Let them write their
answers in their
notebooks.
Math3
1. 16 ÷ 5
a. Write the closest number to
16 that divides 5 evenly _______
b. Write a new number sentence
c. 16 ÷ 5 is about _______
Math3
2. 786 ÷ 37
a. Write the closest number to
786 that divides 37 evenly _____
b. Write a new number sentence
c. 786 ÷ 37 is about _______
How can we estimate the
quotient?
To estimate a quotient, round
the divisors.
Think of the compatible
numbers to divide the
estimate.
Math 3
Gawain 3
Sagutin ang suliranin sa
ibaba sa loob ng 2 minuto.
Ipakita ang solusyon sa
pisara.
1. May 65 bata na pupunta sa
museong Pambata. Kung
ang mga bata ay
papangkatin sa 8, mga ilang
bata mayroon sa bawat
pangkat?
2. Inatasan ni Gng. Ramos ang
klase niya na may 47 mag-aaral
sa Science na magsaliksik
tungkol sa properties of matter.
Ang bawat pangkat ay
magsasaliksaik ng isa sa 3
properties of matter, mga ilang
bata ang magiging miyembro ng
bawat pangkat?
3. Kung 736 na mag-aaral na
nasa unang baitang ay
hahatiin sa 12 klase, mga
ilang bata mayroon sa bawat
klase?
Sagot
1. 64 ÷ 8 = 8, about 8 pupils
2. 48 ÷ 3 = 16, 16 in each group
3. 700 ÷ 10 = 10, about 70 pupils
or 732 ÷ 12 = 61, about 61 pupils
Math 3
Gawain 4
Basahin at unawain ang
sitwasyon sa ibaba.
Si G. Tan ay nagtuturo ng
baseball sa kanilang paaralan.
Araw-araw, iba-ibang bilang ng
mga manlalaro ang nag-eensayo
sa gym,
Math 3
Mga ilan kaya ang bilang ng
koponan na maaaring mabuo
bawat araw? (Bawat koponan ng
baseball ay may 9 na manlalaro.)
Gamitin ang impormasyon sa
talaan para makuha ang bilang ng
koponan na maaaring mabuo
bawat araw. Sipiin sa kuwaderno
ang talaan at isulat ang tamang
sagot.
Araw Bilang ng
manlalaro
Bilang ng
koponan
1. Lunes 73
2. Martes 37
3. Miyerkules 82
4. Huwebes 55
5. biyernes 46
Araw Bilang ng
manlalaro
Bilang ng
koponan
1. Lunes 73 8
2. Martes 37 4
3. Miyerkules 82 9
4. Huwebes 55 6
5. biyernes 46 5
Sagot
Math 3
Gawain 5
A. Tantiyahin ang sagot
(estimate quotient) at
ipaliwanag ang sagot kung ito
ay mas maliit o mas malaki sa
eksaktong sagot. Isulat ang
sagot sa sagutang papel.
Estimate > O < Exact
Quotient
1. 64÷7
2. 83÷9
3. 130÷8
4. 396÷4
5. 850÷9
6. 244÷37
7. 300÷59
8. 397÷4
9. 230÷73
10. 545÷50
Estimate > O
<
Exact
Quotient
1. 64÷7 63÷7 =9 < 9 r 1
2. 83÷9 81÷9=9 < 9 r 2
3. 130÷8 120÷8=15 < 16 r 2
4. 396÷4 400÷4 =100 > 99
5. 850÷9 850÷10 =85 < 94 r 4
6.244÷37 240÷ 40 =6 < 6 r 22
Sagot
7. 300÷59 300 ÷ 60
= 5
< 5 r 5
8. 397÷4 400 ÷ 4 =
100
> 99 r 1
9. 230÷73 210 ÷ 70
= 3
< 3 r 11
10. 545÷50 550 ÷ 50
= 11
> 10 r 45
Math 3
B. Alin sa sumusunod na
sitwasyon ang paggamit ng
estimate quotient ay nararapat
kaysa sa eksaktong sagot. Isulat
ang tantiya (estimate) kung ito
ay nararapat sa patlang kung
hindi, isulat ang salitang eksakto
sa patlang.
Math3
_____1. Pagkuha ng average ng
marka ng lahat ng asignatura.
_____2. Pagkuha ng halaga na
maaari mong gastusin sa loob ng
isang linggo, mula sa isang buwan
mong baon.
_____3. Pagkuha ng average na
bilang ng salita na nabasa mo sa
loob ng isang linggo.
Sagot
1. Exact
3. Estimate
2. Exact
Math 3
Gawain 6
A. Isulat ang tantiyang sagot
o estimate quotient sa inyong
papel.
Takdang-Aralin
1. 253 ÷ 50
3. 270 ÷ 32
2. 360 ÷ 7
4. 423 ÷ 18
5. 554 ÷ 6
A.
Sagot
2. 50 3. 540 ÷ 6 = 90
4. 9 5. 440 ÷ 20 = 22
1. 5
A.
Math 3
B. Sumulat ng isang
word problem na may
kaugnayan sa araw-araw
na buhay na
ginagamitan ninyo ng
pagtatantiya o
estimation.
Lesson 52
Dividing Mentally 2-
Digit Numbers by 1-
Digit Numbers
without Remainder
Math3
Objective
Divide mentally 2-
digit numbers by 1-
digit numbers
without remainder
Math3
Drill
Contest: “A Step for Victory”
Mechanics:
1. Pupils will be grouped into
fives. Participants from each
group will be called one at a time.
2. Flash the cards with word
problems or mathematical facts
such as:
a. I'm thinking of a number. When
you divide it by 3 the
quotient is 6. What is the
number?
b. The dividend is 10, the
quotient is 2, what is the divisor?
c. The divisor is 5, the quotient is
9, what is the dividend?
d. The divisor is 7, the dividend is
21, what is the
quotient?
e. The dividend is 81, the divisor is 9,
what is the quotient?
2
x 6
7
+ 8
30
-11
8
x 4
12
+23
63
÷ 9
28
÷ 7
3. The first pupil to give the
correct answer will make a step
forward together with his/her
group mates. The first set of
pupils from each group will then
go at the back of their other
group mates.
4. Another set of pupils from each
group will answer another
mathematical problem. The first
pupil to give the correct answer
will make a step forward together
with his/her group mates. This set
of pupils from each group will also
go at the back of their other group
mates.
5. Do this activity until one
group reaches the finish line
and will be declared the
winner.
Math 3
1. 3 x 3 = ______
2. 30 x ____ = 90
3. ____ x 3 = 900
4. 4 x 4 = ______
5. 5 x ____ = 200
Find the missing numbers.
What multiplication pattern did
you use to find the missing
number?
Math3
Motivation
Get 9 counters, e.g. popsicle
sticks. Suppose you will give
these counters equally to your 3
friends for your science activity,
how many counters will each of
your friends receive? Using your
“Show me” boards, draw how
you will group these counters
equally.
Math 3
1. Into how many groups
did you divide the
counters? Why?
2. How many counters will
be given to each of your
friends?
Math 3
3. Using your show cards, draw
different ways of grouping 12
equally.
4. What is the basic fact that you
used in the problem?
(9 ÷ 3) = 3
Math 3
5. Do you also share your toys?
Why?
6. How do you feel when you
share your toys?
Math3
Presenting the Lesson
Present a word problem.
Miss Hilario has 90 books in
mathematics. She wants to
divide these books equally
among 3 sections. How many
books will each section
receive?
b. What does she want to do with
the books?
c. How shall she solve the
problem?
a. How many books does Miss
Hilario have?
d. What is the number sentence?
(90 ÷ 3 = n)
Math 3
Look at the dividend. Is it divisible
by 10?
Since 90 is a multiple of 10, you
can simply use the basic fact to
divide 90 by 3 mentally
90 ÷ 3 = 9 tens divided by 3
equals 3 tens.
So, 90 ÷3 =30
Each section will have 30 books.
Math3
What strategy did you use to
get the answer?
If Miss Hilario will distribute
the 90 books to 30 schools in
Manila, how many books will
each school receive?
(Family fact/basic division fact)
Math3
What process will you use to
solve the problem?
Look at the number of zeros in
both the dividend and divisor.
Can we cross out the same
number of zeros in both the
dividend and divisor?
(Write the equation on the
board.)
Math 3
90÷ 30 = 3 Now think 9 ÷ 3 = 3
So, what is 90 ÷ 30 = 3
Each school will receive 3 books.
What do you call this strategy,
when you cancelled the same
number of zeros both in dividend
and in divisor?
(Cross-out method)
Math 3
Can you divide 95 by 5 without
using paper and pencil?
Let us find the answer:
Can you rename the dividend
95?
By renaming:
95 ÷ 5 = (60 ÷ 5) + (35 ÷ 5)
12 + 7 = 19
So, 95 ÷ 5 =19
In this example, what did you do
to divide mentally?
(rename the dividend)
What do you call this strategy?
(Renaming)
Let us use 95 ÷ 5 in dividing
mentally using another strategy:
What is the divisor?(5)
If the divisor is 5, multiply it by 2
to make it 10. Multiply also the
dividend by 2 to compensate and
divide its product by 10.
Math3
95 ÷ 5 = (95 x 2) ÷ (5 x 2)
190 ÷ 10 = 19
What strategy did you use to
divide? 95 ÷ 5?
(Compensation)
Math3
Performing the Activity
a. Divide the following mentally
using any method. Use your
show me board.
The teacher will read the given.
When she says “stop” the
pupils will raise their show me
board.
1. 45÷ 5
2. 54 ÷ 3
3. 60 ÷ 2
4. 68 ÷ 4
5. 70÷ 5
6. 76÷4
7. 72÷ 3
8. 85÷ 5
9. 90 ÷ 6
10. 98 ÷ 7
Group Activity
Gawain 1
Tukuyin ang sagot gamit ang isip
lamang at isulat ang sagot at
paraang ginamit.
Pamilang na
Pangungusap
(Number
Sentence)
Paraang Ginamit
(Method Used)
1. 45 ÷ 3 = _____
2. 57 ÷ 3 = _____
3. 76 ÷ 2 = _____
4. 85 ÷ 5 = _____
5. 96 ÷ 6 = ______
Sagot
1. 15 3. 38
2. 19
4. 17 5. 16
How did you get the answers in
the activity?
How many digits are there in the
dividends? the divisor?
Can we get the answer without
using our paper and pencil?
How?
What strategies did you use in
dividing mentally?
Which among the strategies
given is the easiest for you to
divide mentally? Why?
Math 3
Reinforcing the Concept
a. Prepare cards with
mathematical problems. Instruct
one pupil to pick one card from
the box. Then ask the pupil to
read the question and give the
correct answer. (The teacher
should have ready-made
questions before the activity.)
Math 3
Examples:
1. 45 ÷ 3 = _____
2. _____ ÷ 10 = 5
3. 60 ÷ _____ = 30
4. 75 ÷ _____ = 25
5. How many tens
are there in 60?
Math 3
6. How many fives are
there in 75?
7. What is 46 ÷ 2?
8. How many 15s are
there in 60?
Gawain 2
Buuin ang talaan sa ibaba sa
pamamagitan ng paghahati ng
mga bilang sa kaliwa sa
nakasaad na divisor. Tukuyin ang
sagot gamit ang isip lamang at
isulat ito sa sagutang papel.
Hatiin sa limahan (Divide by 5)
Bilang Sagot
1. 35
2. 45
3. 50
4. 60
5. 75
Hatiin sa animan (Divide by 6)
Bilang Sagot
1. 18
2. 24
3. 36
4. 48
5. 54
Hatiin sa siyaman (Divide by 9)
Bilang Sagot
1. 27
2. 45
3. 63
4. 72
5. 81
Math 3
Choose one dividend from
house A and one divisor
from house B to make
a division sentence. You
may use each number
more than once.
A
32 27 56
63 48 24
72 81
Dividend
B
5 8 6
3 4 2
9 7
Divisor
Math3
How do we divide mentally 2-
digit numbers by 1-digit
numbers without
remainder?
To divide mentally, rename the
dividend to numbers that are
easy to divide, then add their
quotient.
Math3
When the divisor is 5, use
compensation method to divide
mentally. This
means, multiply the divisor 5
by 2 to make it 10.Then
multiply the dividend by
2 and divide its product by 10.
Math3
a. Let the pupils solve the
following problems mentally.
1. There are 36 mangoes on the
table. If Rina will put 4 mangoes
in each box, how many boxes
will be used?
Math3
2. Mang Tomas sells rice in the
market. He wants to pack 75 kilos
of rice into 5-kilo bags. How many
bags will he need?
3. Mrs. Padilla’s class is 60
minutes. She wants to divide her
class time into 3 equal periods.
How many minutes will each
period be?
Math3
4. Mother buys 36 meters of cloth
for her dress shop. She has to
distribute it to her 3 sewers
equally.
a. How many meters will each
sewer receive?
b. How could you use a basic fact
to find the answer?
Gawain 3
Gawin ang pagsasanay sa ibaba
gamit ang isip lamang. Bumuo
ngdivision sentence gamit ang
dividend na nakasaad sa bawat
bilang. Isulat ang tamang sagot
sa papel.
Math 3
Hal: 21 = Division Sentence 21
divided by 3 = 7
1. 18 3. 40 4. 55
2. 26
5. 63 6. 72 7. 80
8. 86 9. 90 10. 96
Math3
Provide the activity below
and let the pupils solve
mentally then compare
the quotients using
greater than, less than or
equal to.
1. 35 ÷ 7 _____ 16 ÷ 4
2. 48 ÷ 6 _____ 63 ÷ 7
3. 56 ÷ 7 _____ 24 ÷ 3
4. 88 ÷ 4 _____ 60 ÷ 5
5. 90 ÷ 3 _____ 96 ÷ 3
Gawain 4
Basahin at unawain ang
sitwasyon sa ibaba. Sagutin
ang sumusunod na tanong
gamit ang isip.
Math3
1. Kung ikaw ay may
PHP75 sa iyong pitaka, at
pamimiliin ka ng mga
bagay na puwede mong
mabili mula sa listahan
sa ibaba, ano-ano ang
bibilhin mo at bakit?
Math 3
Item Bilang ng
Item
Presyo ng
bawat item
A. Papel 12 piraso PHP6 bawat
piraso
B. Pad ng
papel
5 pad PHP15 bawat
piraso
C. krayola 4 na kahon PHP25 bawat
kahon
D.
kuwaderno
5 piraso na
kuwaderno
PHP17 bawat
kuwaderno
Gawain 5
Bumuo ng division sentence
gamit ang dividend na
nakasaad sa bawat bilang.
Isulat ang sagot sa inyong
kuwaderno.
Takdang-Aralin
Lesson 53
Solving Problems
involving Division
without or with any
other Operations of
Whole Numbers
Math3
Objective
Solve routine and non-routine
problems involving division of
2- to 4-digit numbers by
1- to 2-digit numbers without or
with any other operations of
whole number including
money using appropriate
problem strategies and tools
Math3
Drill
Flash cards with the
division facts and let the
pupils solve mentally.
1. 18÷3 =
2. 24÷ 4 =
3. 32÷ 8 =
4. 49 ÷7 =
5. 56 ÷9 =
6. 63÷7 = 9
7. 70÷ 5 =
8. 80÷ 4 =
9. 81 ÷9 =
10. 90 ÷ 10 =
Review
Shows a flash card with
illustration and ask the pupils to
write the division and fact family
using their “show me” board one
at a time.
Math 3
Example:
Number sentence: M 2 x 6= 12
D 12÷ 6 = 8
1.
M_____________
D_____________
_
2.
M____________
_
D____________
3.
M____________
_
D____________
Math 3
Motivation
What have you seen in the
picture?
What can you say about the
current price of rice in the
market?
Math 3
Why do you think most of
us like to eat rice?
Math3
Presenting the Lesson
Present a problem.
Mang Ramon packed 96 kilos
of rice into 12-kilo bags. A bag
of rice was sold
for PhP400 each. If he paid his
helper PhP500, how much did
he earn?
Let us analyze the problem. Use the
following steps:
Steps Questions Response
Solving
problem
requires
understandi
ng and
analysis of
the problem.
What do
you need
to find
out in the
problem?
The
amount the
owner
earned
96 kilos of
rice packed
What does
the problem
tell?
What
information
do you
have?
What are the
hidden
questions?
into
12-kilo bags.
A bag of rice
was sold at
PhP400 each.
Salary of helper
PhP500,
How many 12-
kilo bags of rice
were sold?
Plan:
Knowing all
the needed
information
and data,
determinin
g what
operations
to use.
What
operations
to use?
Write a
number
sentence.
Division
and
multiplicati
on
and
subtraction
((96÷ 12) x
PhP400)
- PhP500
=______
Solve Perform the
operations.
Do the
operation
inside
the ( )first.
96÷ 12 =8
PhP400 x 8
= PhP3 200
PhP3 200 –
500=PhP2
700
Answer The vendor
earned
PhP270
Math 3
1. Annie is using plastic string
to make key chains. Initially,
she had 175 cm of
plastic string. She used 30 cm
for one key chain. Is Annie
going to have enough plastic
string for five more key chains
of the same size?
Let’s have more examples:
Do you have any idea on how
to solve this problem? Let’s
figure out!
Understand What facts do you know?
• The roll of string is 175 cm
long.
• Each keychain is 30 cm
long.
• She has already used 40
cm of string.
What do you need to find?
• Does Annie have enough
string to make 6 more key
chains?
Plan (The teacher should bring the
following to facilitate the
learning process.
Use the act it out strategy with a
piece of string that is 175
cm long.
Mark off the amount used for the
first keychain, 30 cm,
and continue marking off lengths
of 30 cm until there are
six more key chains or no more
string left
Solve
Notice that there is only
enough string for 4 more key
chains. So, there is not
enough plastic string for 5
more
30 cm 30 cm 30 cm 30 cm 30 cm 25 cm
0 30 60 90 120 150 30
Check Look back. Is the
answer reasonable?
Check by
multiplying. Since 30 × 5
= 150 and 30 × 6 = 180,
there is
only enough string for 5
key chains in all, not 6.
has 15 pieces of stars. She wants
to share them equally with her 3
friends,how many stars will each
of them receive?
Can you think of different ways to
solve this?
Can we group the stars into 3
equally?
Pupil 1 will give the stars one at a
time to her friends until all the
stars are given.
Pupil 2 will give 5 stars at once to
each of her friends.
So, each of them will receive 5
stars.
Possible Answers:
Instruct the pupils to work in pair.
Draw a picture to illustrate the
sharing of 6 pieces of 50-peso bills
equally distributed among 5
friends. How much will each
receive?
Performing the Activities
Math 3
Gawain 1
Basahin ang suliranin o
word problem at sagutin ang
tanong. Ipaliwanang ang
inyong sagot. Isulat ang
sagot sa sagutang papel.
1. Naghanda ng 60 tinapay
ang nanay para sa mga
panauhin. May 7 mesa
siyang lalagyan na may 7
panauhing nakaupo. Sapat
ba ang bilang ng tinapay na
inihanda ng nanay? Bakit?
2. May PHP850 si Ana para
pambili ng pagkain niya.
Kung maglalaan siya ng
PHP120 bawat araw., Ilang
araw tatagal ang pera niya?
3. Si G. Santos ay may 2161
piraso ng mangga. Kung
ilalagay niya ito sa 200 basket
na may pare-parehong bilang,
Ilang mangga ang mailalaman
sa bawat basket? Ilan namang
piraso ng mangga ang hindi
mailalagay sa basket?
Math 3
1.) Yes, 60 – (7 x 7) = 60 – 49 =
11sandwiches left
2.) PhP850 ÷ 120 = 7 r 10; 10
pesos would be left after 7 days
3.) 2 161 ÷ 200 = 10 r 161, 10
baskets with 200 mangoes and
161 mangoes will be put in one
basket
What are the different
strategies in finding the
answer?
Processing the Activities
Math3
Reinforcing the Concept
Divide the class into six
groups. Distribute the activity
cards. Ask them to
show their solution and post
their work after answering the
activity.
Groups 1 and 2
Jovie saves PhP 225.00. She
would like to buy identical
gifts for her 3 friends.
How much is the cost of gift
that she would give to them?
Math 3
Groups 3 and 4
Math 3
Look at the table below.
1. Helper A can carry 10 boxes
of rambutan
2. Helper B can carry 8 boxes
of rambutan
3. Helper C can carry 6 boxes
of rambutan
How many different ways could
the three helpers divide the boxes
of rambutan?
How do you know that you have
shown all the possible ways of
grouping 24?
Groups 5 and 6
Math 3
There are 225 pupils in
Grade 3. If the pupils are
divided equally into 5
sections, how many
pupils are there in each
section?
Illustrate the sentences below
and write the number sentence.
Math 3
1. PhP3 200 is given to 80 pupils.
2. Mario bought 3 kilos of rice
worth PhP112.
3. 32 pieces of pandesal given to
4 pupils
Math 3
4. 60 goats owned equally by 6
farmers
5. How many 50’s are there in
6 000?
Summarizing the Concept
What are the different
strategies /methods in
solving word problems?
Math 3
Gawain 2
Basahin ang sumusunod na
suliranin o word problem at
sagutin ang mga tanong.
Gamitin ang iba’t ibang paraan
para makuha ang tamang
sagot sa pamamagitan ng
pagguhit o pagpapangkart.
1. May 32 piraso ng cupcake na
ipamimigay sa 8 mag-aaral. Ilang
cupcake ang matatanggap ng
bawat mag-aaral?
2. Si Mrs. Ramos ay may PHP750,
maaari ba niyang mabigyan ng
PHP90 ang 5 niyang anak at 2
pamangkin para sa 3 araw na
baon? Bakit?
3. Ipamimigay ang 15 balot ng
noodles, 20 kilo ng bigas, at 5
piraso ng sabong panlaba sa
mga nasalanta ng bagyo. Paano
mo hahatiin ang mga ito sa 5
pamilya? Gumawa ng sariling
listahan.
4. Maari bang magkaroon ng 35
piraso ng PHP50 sa 6 000? Bakit?
5. Suriin ang mga talaan ng bagay
sa ibaba. Pumili ng mga bagay na
maaari mong mabili sa PHP500.
Produkto Presyo ng
Produkto
PHP135
PHP125
PHP200
PHP20
PHP5
PHP25
PHP3
1. 4 cupcakes
2. Yes, because PhP750 ÷ (5 + 2)
= PhP107 with PhP1 remaining
3. 3 packs of noodles, 4 kilos of
rice and 1 bar of laundry soap for
each household
Answer
Key:
4. Yes, because 35 x PhP50 =
PhP1 750, PhP1 750 is less than
PhP6 000.
5. Pupils answers may vary
Math 3
Gawain 3
Lutasin ang suliranin o word
problem sa ibaba. Ipakita ang
iba’t ibang paraan ng pagsagot
sa pamamagitan ng
paglalarawan at
pagpapangkat. Isulat ang
tamang sagot sa kuwaderno.
4. Ilang pangkat ng 5 mayroon sa
125?
5. Ilang pangkat ng 100 mayroon sa
600?
1. Kung papangkatin ang 76 sa 12,
ilang pangkat mayroon?
2. May ilang PHP20 mayroon sa
PHP920?
3. Ilang pangkat ng PHP50 mayroon
sa PHP750?
1. Pupils may draw 76 objects
and group them into 12 sets of 6.
The number of objects left is 4.
2. PhP920 ÷ 20 = 46 twenty-pesos
Key Answer:
5. 6 groups
of 100
3. 15 4. 25
1. A baker bakes 1 720 cookies. He
placed 25 pieces in each plastic
bag. How many plastic bags of
cookies were there in all?
2. Seven boys ate their lunch at
the canteen. The meal cost
PhP238. They agreed to share
equally the expenses. What was
the share of each boy?
1. 68 plastic bags with 25
cookies and 20 remaining
cookies
2. PhP34 share of each boy
Key Answer:
1. A sampaguita vendor
gathered 800 sampaguita
flowers. She used 10 flowers
to make a garland. How many
garlands did she make?
2. Mr Reyes‘s store had 144 pairs
of socks. The socks were sold in
packages of 12 pairs. How many
packages were there?
3. Mrs. Abellardo withdrew
PhP2 500 from the bank. She
bought grocery items worth
PhP1 375 and the remaining
amount would be given equally
among her 3 children as their
weekly allowance. How much
would each child receive?
Explain your answer.
Key Answer:
1. 80
garlands
2. 12
packages
3. PhP375
per child
Math 3
Gawain 4
Kung ikaw ay may PHP200
para sa isang linggo, paano
mo ito gagastusin? Gumawa
ng sariling talaan kung paano
mo gagastusin sa loob ng 5
araw. Isulat sa papel ang
inyong sagot.
Halaga na ibinigay: PHP200
Produktong bibilhin Halaga

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What is the number?b. 36 ÷ 4

  • 2. Math3 Objective Estimate the quotient of 2- to 3-digit numbers by 1- to 2-digit numbers with reasonable results
  • 3. Math3 Drill Show the number wheel to the class. Distribute “Show me” boards to the pupils. Instruct them to round off each number that the pointer indicates.
  • 4.
  • 5. Review Divide the class into five groups. Let them complete the grid for 3 minutes. Make a table as shown below. Let the pupils divide the numbers along the first row (dividend) with the numbers along the first column (divisor). Write the quotient in the grid. Provide an example.
  • 6. ÷ 90 120 150 3 30 6 10 Dividend Divisor
  • 7. Presenting the Lesson Let the pupils analyze the given problem.
  • 8. A jeepney driver travelled a total distance of 325 km in 31 days. About how many kilometers did he travel in each day? (This is assuming he did not have a day off and the distance covered daily is uniform).
  • 9. Math3 a. What process will you use to solve the word problem? b. How will you represent the problem into a number sentence? c. Can you think of a possible solution to get the answer?
  • 10. Look at the given: 325 ÷ 31. Ask the pupils to estimate 325 ÷ 31. Lead the pupils in discovering the steps. Lead them to answer the problem by asking questions. Write the pupils’ response on the chart.
  • 11. Math3 d. What is the divisor in the given? How many digits are in the divisor? e. What about the dividend? f. What is 31 when you round it off to the nearest tens?
  • 12. Math 3 Now, can you think of a compatible number closer to 325 that can be divided by 31? For example, 21 ÷ 11, the compatible numbers are 20 ÷ 10 because 20 can be easily divided by 10. So the estimated quotient of 21 ÷ 11 is 2.
  • 14. Math 3 From your list, which among these numbers is closer to 325 and can be a compatible number to divide? Now, what is your estimate answer? How far did the driver travel a day?
  • 15. Math 3 Does it mean that the driver travels more or less than 10 kilometers in a day? Why? (The driver travels more than 10 km in a day because 325 ÷ 31 = 10 r 15, which is greater than 10 km.)
  • 16. If Karen pours 80 glasses of buko juice into 9 pitchers, about how many glasses of buko juice will be in each pitcher?
  • 17. Math 3 Does it mean that the driver travels more or less than 10 kilometers in a day? Why? (The driver travels more than 10 km in a day because 325 ÷ 31 = 10 r 15, which is greater than 10 km.)
  • 18. Math 3 Let us estimate the quotient of 80 ÷ 9. Look at the divisor. How many digits do we have in the divisor? What about the dividend? This time let us analyze the dividend. Can you think of a number which is close to 80?
  • 19. Math3 What is the closest number to 80 that can be divided by 9? what is 81 ÷ 9? So, there will be 9 glasses of buko juice in each pitcher. (81)  9
  • 20. Math 3 Why is it important to think of the basic facts in estimating the quotient? Is the quotient of 33 ÷ 4 greater than or less than 8? Now look at 33. This number is close to what number? (32) 32 ÷ 4 = 8
  • 21. Math 3 To check, let us multiply 8 and 4, and you will have the same answer. Emphasize that, in estimating quotients, we do not round a 1- digit divisor.
  • 22. Presenting the lesson Math 3 Gawain 1 Kumpletuhin ang talaan sa ibaba. Isulat ang angkop na sagot sa bawat kolum. Gawin ito sa inyong sagutang papel.
  • 23. Bilang I-round off ang divisor Mag-isip ng Bilang na Compati ble Tantiy ahin (Esti mate) 1. 184 ÷ 11 2. 338 ÷ 48 3. 508 ÷ 21 4. 677 ÷ 56 5. 899 ÷ 78
  • 24. Bilang I-round off ang divisor Mag-isip ng Bilang na Compati ble Tantiy ahin (Esti mate) 1. 184 ÷ 11 10 180 ÷ 10 17 2. 338 ÷ 48 50 350 ÷ 50 7 3. 508 ÷ 21 20 500 ÷ 20 25 4. 677 ÷ 56 60 660 ÷ 60 11 5. 899 ÷ 78 80 880 ÷ 80 11 Sagot
  • 25. Math 3 Divide the class into five groups. Provide an activity card for each group to perform. Ask somebody from the group to report their output.
  • 26. Group 1 1. 25 ÷ 6 = __________ 2. 274 ÷ 9 = __________ Group 2 3. 41 ÷ 7 = __________ 4. 526 ÷ 12 = __________ Group 3 5. 65 ÷ 8 = __________ 6. 615 ÷ 28 = __________ Group 4 7. 74 ÷ 9 = __________ 8. 479 ÷ 18 = __________ Group 5 9. 85 ÷ 5 = __________ 10. 285 ÷ 5 = __________
  • 27. Math 3 Activity: Read and answer the activity below. Give this problem one at a time. Let the pupils answer each item for one minute. What basic division fact can you use to help you estimate the quotient of 14 ÷ 5? Explain.
  • 28. Math3 Possible answer: 15 ÷ 5 = 3. Since 14 is close to 15, the quotient is about 15. 1. Is the quotient of 49 ÷ 6 greater than or less than 8? Explain. (Answer: 48 ÷ 6 = 8, so 49 ÷ 6 is greater than 8)
  • 29. Math3 2. Is the quotient of 53 ÷ 9 greater than or less than 6? Explain. 3. Is the quotient of 41 ÷ 7 greater than or less than 6? Explain. (Answer: 54 ÷ 9 = 6, so 53 ÷ 9 is less than 6) (Answer: 42 ÷ 7 = 6, so 41 ÷ 7 is less than 6)
  • 30. Math3 a. How did you do to get the answer? b. Why is it important to round off the divisor in estimating quotient?
  • 31. Math 3 Gawain 2 A. Isulat ang pinakamalapit na bilang sa 38 na kung hahatiin ng bawat bilang sa ibaba ay walang matitira.
  • 32. Math 3 1. 4___________ 2. 6___________ 3. 8___________ 4. 5___________ 5. 9___________ A.
  • 33. Sagot 1. 40 3. 40 2. 36 4. 40 5. 36 A.
  • 34. Math 3 B. Isulat ang tinantiyang (estimate) quotient sa bawat bilang. 1. 19 ÷ 6 2. 29 ÷ 4 3. 35 ÷ 4 4. 68 ÷ 8 5. 93 ÷ 5
  • 35. Sagot 1. 20÷5 = 4 3. 36÷4 = 9 2. 28÷4 = 7 4. 64÷8 = 8 or 72÷8 = 9 5. 95÷5 = 19 B.
  • 36. C. Isulat ang tinantiyang (estimate) quotient. 1. 119 ÷ 23 2. 320 ÷ 80 3. 431 ÷ 61 4. 753 ÷ 90 5. 821 ÷ 89
  • 37. Sagot 1. 120÷20 = 6 3. 420÷60 = 7 2. 320÷80 = 4 4. 720÷90 = 8 or 800÷100 = 8 5. 810÷90 = 9 C.
  • 38. Math3 For additional activity, let the pupils estimate the quotient of the following. Let them write their answers in their notebooks.
  • 39. Math3 1. 16 ÷ 5 a. Write the closest number to 16 that divides 5 evenly _______ b. Write a new number sentence c. 16 ÷ 5 is about _______
  • 40. Math3 2. 786 ÷ 37 a. Write the closest number to 786 that divides 37 evenly _____ b. Write a new number sentence c. 786 ÷ 37 is about _______
  • 41. How can we estimate the quotient? To estimate a quotient, round the divisors. Think of the compatible numbers to divide the estimate.
  • 42. Math 3 Gawain 3 Sagutin ang suliranin sa ibaba sa loob ng 2 minuto. Ipakita ang solusyon sa pisara.
  • 43. 1. May 65 bata na pupunta sa museong Pambata. Kung ang mga bata ay papangkatin sa 8, mga ilang bata mayroon sa bawat pangkat?
  • 44. 2. Inatasan ni Gng. Ramos ang klase niya na may 47 mag-aaral sa Science na magsaliksik tungkol sa properties of matter. Ang bawat pangkat ay magsasaliksaik ng isa sa 3 properties of matter, mga ilang bata ang magiging miyembro ng bawat pangkat?
  • 45. 3. Kung 736 na mag-aaral na nasa unang baitang ay hahatiin sa 12 klase, mga ilang bata mayroon sa bawat klase?
  • 46. Sagot 1. 64 ÷ 8 = 8, about 8 pupils 2. 48 ÷ 3 = 16, 16 in each group 3. 700 ÷ 10 = 10, about 70 pupils or 732 ÷ 12 = 61, about 61 pupils
  • 47. Math 3 Gawain 4 Basahin at unawain ang sitwasyon sa ibaba. Si G. Tan ay nagtuturo ng baseball sa kanilang paaralan. Araw-araw, iba-ibang bilang ng mga manlalaro ang nag-eensayo sa gym,
  • 48. Math 3 Mga ilan kaya ang bilang ng koponan na maaaring mabuo bawat araw? (Bawat koponan ng baseball ay may 9 na manlalaro.) Gamitin ang impormasyon sa talaan para makuha ang bilang ng koponan na maaaring mabuo bawat araw. Sipiin sa kuwaderno ang talaan at isulat ang tamang sagot.
  • 49. Araw Bilang ng manlalaro Bilang ng koponan 1. Lunes 73 2. Martes 37 3. Miyerkules 82 4. Huwebes 55 5. biyernes 46
  • 50. Araw Bilang ng manlalaro Bilang ng koponan 1. Lunes 73 8 2. Martes 37 4 3. Miyerkules 82 9 4. Huwebes 55 6 5. biyernes 46 5 Sagot
  • 51. Math 3 Gawain 5 A. Tantiyahin ang sagot (estimate quotient) at ipaliwanag ang sagot kung ito ay mas maliit o mas malaki sa eksaktong sagot. Isulat ang sagot sa sagutang papel.
  • 52. Estimate > O < Exact Quotient 1. 64÷7 2. 83÷9 3. 130÷8 4. 396÷4 5. 850÷9 6. 244÷37
  • 53. 7. 300÷59 8. 397÷4 9. 230÷73 10. 545÷50
  • 54. Estimate > O < Exact Quotient 1. 64÷7 63÷7 =9 < 9 r 1 2. 83÷9 81÷9=9 < 9 r 2 3. 130÷8 120÷8=15 < 16 r 2 4. 396÷4 400÷4 =100 > 99 5. 850÷9 850÷10 =85 < 94 r 4 6.244÷37 240÷ 40 =6 < 6 r 22 Sagot
  • 55. 7. 300÷59 300 ÷ 60 = 5 < 5 r 5 8. 397÷4 400 ÷ 4 = 100 > 99 r 1 9. 230÷73 210 ÷ 70 = 3 < 3 r 11 10. 545÷50 550 ÷ 50 = 11 > 10 r 45
  • 56. Math 3 B. Alin sa sumusunod na sitwasyon ang paggamit ng estimate quotient ay nararapat kaysa sa eksaktong sagot. Isulat ang tantiya (estimate) kung ito ay nararapat sa patlang kung hindi, isulat ang salitang eksakto sa patlang.
  • 57. Math3 _____1. Pagkuha ng average ng marka ng lahat ng asignatura. _____2. Pagkuha ng halaga na maaari mong gastusin sa loob ng isang linggo, mula sa isang buwan mong baon. _____3. Pagkuha ng average na bilang ng salita na nabasa mo sa loob ng isang linggo.
  • 59. Math 3 Gawain 6 A. Isulat ang tantiyang sagot o estimate quotient sa inyong papel. Takdang-Aralin
  • 60. 1. 253 ÷ 50 3. 270 ÷ 32 2. 360 ÷ 7 4. 423 ÷ 18 5. 554 ÷ 6 A.
  • 61. Sagot 2. 50 3. 540 ÷ 6 = 90 4. 9 5. 440 ÷ 20 = 22 1. 5 A.
  • 62. Math 3 B. Sumulat ng isang word problem na may kaugnayan sa araw-araw na buhay na ginagamitan ninyo ng pagtatantiya o estimation.
  • 63. Lesson 52 Dividing Mentally 2- Digit Numbers by 1- Digit Numbers without Remainder
  • 64. Math3 Objective Divide mentally 2- digit numbers by 1- digit numbers without remainder
  • 65. Math3 Drill Contest: “A Step for Victory” Mechanics: 1. Pupils will be grouped into fives. Participants from each group will be called one at a time. 2. Flash the cards with word problems or mathematical facts such as:
  • 66. a. I'm thinking of a number. When you divide it by 3 the quotient is 6. What is the number? b. The dividend is 10, the quotient is 2, what is the divisor? c. The divisor is 5, the quotient is 9, what is the dividend?
  • 67. d. The divisor is 7, the dividend is 21, what is the quotient? e. The dividend is 81, the divisor is 9, what is the quotient? 2 x 6 7 + 8 30 -11 8 x 4 12 +23 63 ÷ 9 28 ÷ 7
  • 68. 3. The first pupil to give the correct answer will make a step forward together with his/her group mates. The first set of pupils from each group will then go at the back of their other group mates.
  • 69. 4. Another set of pupils from each group will answer another mathematical problem. The first pupil to give the correct answer will make a step forward together with his/her group mates. This set of pupils from each group will also go at the back of their other group mates.
  • 70. 5. Do this activity until one group reaches the finish line and will be declared the winner.
  • 71. Math 3 1. 3 x 3 = ______ 2. 30 x ____ = 90 3. ____ x 3 = 900 4. 4 x 4 = ______ 5. 5 x ____ = 200 Find the missing numbers.
  • 72. What multiplication pattern did you use to find the missing number?
  • 73. Math3 Motivation Get 9 counters, e.g. popsicle sticks. Suppose you will give these counters equally to your 3 friends for your science activity, how many counters will each of your friends receive? Using your “Show me” boards, draw how you will group these counters equally.
  • 74. Math 3 1. Into how many groups did you divide the counters? Why? 2. How many counters will be given to each of your friends?
  • 75. Math 3 3. Using your show cards, draw different ways of grouping 12 equally. 4. What is the basic fact that you used in the problem? (9 ÷ 3) = 3
  • 76. Math 3 5. Do you also share your toys? Why? 6. How do you feel when you share your toys?
  • 77. Math3 Presenting the Lesson Present a word problem. Miss Hilario has 90 books in mathematics. She wants to divide these books equally among 3 sections. How many books will each section receive?
  • 78. b. What does she want to do with the books? c. How shall she solve the problem? a. How many books does Miss Hilario have? d. What is the number sentence? (90 ÷ 3 = n)
  • 79. Math 3 Look at the dividend. Is it divisible by 10? Since 90 is a multiple of 10, you can simply use the basic fact to divide 90 by 3 mentally 90 ÷ 3 = 9 tens divided by 3 equals 3 tens. So, 90 ÷3 =30 Each section will have 30 books.
  • 80. Math3 What strategy did you use to get the answer? If Miss Hilario will distribute the 90 books to 30 schools in Manila, how many books will each school receive? (Family fact/basic division fact)
  • 81. Math3 What process will you use to solve the problem? Look at the number of zeros in both the dividend and divisor. Can we cross out the same number of zeros in both the dividend and divisor? (Write the equation on the board.)
  • 82. Math 3 90÷ 30 = 3 Now think 9 ÷ 3 = 3 So, what is 90 ÷ 30 = 3 Each school will receive 3 books. What do you call this strategy, when you cancelled the same number of zeros both in dividend and in divisor? (Cross-out method)
  • 83. Math 3 Can you divide 95 by 5 without using paper and pencil? Let us find the answer: Can you rename the dividend 95?
  • 84. By renaming: 95 ÷ 5 = (60 ÷ 5) + (35 ÷ 5) 12 + 7 = 19 So, 95 ÷ 5 =19 In this example, what did you do to divide mentally? (rename the dividend)
  • 85. What do you call this strategy? (Renaming) Let us use 95 ÷ 5 in dividing mentally using another strategy: What is the divisor?(5) If the divisor is 5, multiply it by 2 to make it 10. Multiply also the dividend by 2 to compensate and divide its product by 10.
  • 86. Math3 95 ÷ 5 = (95 x 2) ÷ (5 x 2) 190 ÷ 10 = 19 What strategy did you use to divide? 95 ÷ 5? (Compensation)
  • 87. Math3 Performing the Activity a. Divide the following mentally using any method. Use your show me board. The teacher will read the given. When she says “stop” the pupils will raise their show me board.
  • 88. 1. 45÷ 5 2. 54 ÷ 3 3. 60 ÷ 2 4. 68 ÷ 4 5. 70÷ 5 6. 76÷4 7. 72÷ 3 8. 85÷ 5 9. 90 ÷ 6 10. 98 ÷ 7
  • 89. Group Activity Gawain 1 Tukuyin ang sagot gamit ang isip lamang at isulat ang sagot at paraang ginamit.
  • 90. Pamilang na Pangungusap (Number Sentence) Paraang Ginamit (Method Used) 1. 45 ÷ 3 = _____ 2. 57 ÷ 3 = _____ 3. 76 ÷ 2 = _____ 4. 85 ÷ 5 = _____ 5. 96 ÷ 6 = ______
  • 91. Sagot 1. 15 3. 38 2. 19 4. 17 5. 16
  • 92. How did you get the answers in the activity? How many digits are there in the dividends? the divisor? Can we get the answer without using our paper and pencil? How?
  • 93. What strategies did you use in dividing mentally? Which among the strategies given is the easiest for you to divide mentally? Why?
  • 94. Math 3 Reinforcing the Concept a. Prepare cards with mathematical problems. Instruct one pupil to pick one card from the box. Then ask the pupil to read the question and give the correct answer. (The teacher should have ready-made questions before the activity.)
  • 95. Math 3 Examples: 1. 45 ÷ 3 = _____ 2. _____ ÷ 10 = 5 3. 60 ÷ _____ = 30 4. 75 ÷ _____ = 25 5. How many tens are there in 60?
  • 96. Math 3 6. How many fives are there in 75? 7. What is 46 ÷ 2? 8. How many 15s are there in 60?
  • 97. Gawain 2 Buuin ang talaan sa ibaba sa pamamagitan ng paghahati ng mga bilang sa kaliwa sa nakasaad na divisor. Tukuyin ang sagot gamit ang isip lamang at isulat ito sa sagutang papel.
  • 98. Hatiin sa limahan (Divide by 5) Bilang Sagot 1. 35 2. 45 3. 50 4. 60 5. 75
  • 99. Hatiin sa animan (Divide by 6) Bilang Sagot 1. 18 2. 24 3. 36 4. 48 5. 54
  • 100. Hatiin sa siyaman (Divide by 9) Bilang Sagot 1. 27 2. 45 3. 63 4. 72 5. 81
  • 101. Math 3 Choose one dividend from house A and one divisor from house B to make a division sentence. You may use each number more than once.
  • 102. A 32 27 56 63 48 24 72 81 Dividend
  • 103. B 5 8 6 3 4 2 9 7 Divisor
  • 104. Math3 How do we divide mentally 2- digit numbers by 1-digit numbers without remainder? To divide mentally, rename the dividend to numbers that are easy to divide, then add their quotient.
  • 105. Math3 When the divisor is 5, use compensation method to divide mentally. This means, multiply the divisor 5 by 2 to make it 10.Then multiply the dividend by 2 and divide its product by 10.
  • 106. Math3 a. Let the pupils solve the following problems mentally. 1. There are 36 mangoes on the table. If Rina will put 4 mangoes in each box, how many boxes will be used?
  • 107. Math3 2. Mang Tomas sells rice in the market. He wants to pack 75 kilos of rice into 5-kilo bags. How many bags will he need? 3. Mrs. Padilla’s class is 60 minutes. She wants to divide her class time into 3 equal periods. How many minutes will each period be?
  • 108. Math3 4. Mother buys 36 meters of cloth for her dress shop. She has to distribute it to her 3 sewers equally. a. How many meters will each sewer receive? b. How could you use a basic fact to find the answer?
  • 109. Gawain 3 Gawin ang pagsasanay sa ibaba gamit ang isip lamang. Bumuo ngdivision sentence gamit ang dividend na nakasaad sa bawat bilang. Isulat ang tamang sagot sa papel.
  • 110. Math 3 Hal: 21 = Division Sentence 21 divided by 3 = 7 1. 18 3. 40 4. 55 2. 26 5. 63 6. 72 7. 80 8. 86 9. 90 10. 96
  • 111. Math3 Provide the activity below and let the pupils solve mentally then compare the quotients using greater than, less than or equal to.
  • 112. 1. 35 ÷ 7 _____ 16 ÷ 4 2. 48 ÷ 6 _____ 63 ÷ 7 3. 56 ÷ 7 _____ 24 ÷ 3 4. 88 ÷ 4 _____ 60 ÷ 5 5. 90 ÷ 3 _____ 96 ÷ 3
  • 113. Gawain 4 Basahin at unawain ang sitwasyon sa ibaba. Sagutin ang sumusunod na tanong gamit ang isip.
  • 114. Math3 1. Kung ikaw ay may PHP75 sa iyong pitaka, at pamimiliin ka ng mga bagay na puwede mong mabili mula sa listahan sa ibaba, ano-ano ang bibilhin mo at bakit?
  • 115. Math 3 Item Bilang ng Item Presyo ng bawat item A. Papel 12 piraso PHP6 bawat piraso B. Pad ng papel 5 pad PHP15 bawat piraso C. krayola 4 na kahon PHP25 bawat kahon D. kuwaderno 5 piraso na kuwaderno PHP17 bawat kuwaderno
  • 116. Gawain 5 Bumuo ng division sentence gamit ang dividend na nakasaad sa bawat bilang. Isulat ang sagot sa inyong kuwaderno. Takdang-Aralin
  • 117. Lesson 53 Solving Problems involving Division without or with any other Operations of Whole Numbers
  • 118. Math3 Objective Solve routine and non-routine problems involving division of 2- to 4-digit numbers by 1- to 2-digit numbers without or with any other operations of whole number including money using appropriate problem strategies and tools
  • 119. Math3 Drill Flash cards with the division facts and let the pupils solve mentally.
  • 120. 1. 18÷3 = 2. 24÷ 4 = 3. 32÷ 8 = 4. 49 ÷7 = 5. 56 ÷9 = 6. 63÷7 = 9 7. 70÷ 5 = 8. 80÷ 4 = 9. 81 ÷9 = 10. 90 ÷ 10 =
  • 121. Review Shows a flash card with illustration and ask the pupils to write the division and fact family using their “show me” board one at a time.
  • 123. Number sentence: M 2 x 6= 12 D 12÷ 6 = 8 1. M_____________ D_____________ _
  • 125. Math 3 Motivation What have you seen in the picture?
  • 126. What can you say about the current price of rice in the market? Math 3 Why do you think most of us like to eat rice?
  • 127. Math3 Presenting the Lesson Present a problem. Mang Ramon packed 96 kilos of rice into 12-kilo bags. A bag of rice was sold for PhP400 each. If he paid his helper PhP500, how much did he earn?
  • 128. Let us analyze the problem. Use the following steps: Steps Questions Response Solving problem requires understandi ng and analysis of the problem. What do you need to find out in the problem? The amount the owner earned 96 kilos of rice packed
  • 129. What does the problem tell? What information do you have? What are the hidden questions? into 12-kilo bags. A bag of rice was sold at PhP400 each. Salary of helper PhP500, How many 12- kilo bags of rice were sold?
  • 130. Plan: Knowing all the needed information and data, determinin g what operations to use. What operations to use? Write a number sentence. Division and multiplicati on and subtraction ((96÷ 12) x PhP400) - PhP500 =______
  • 131. Solve Perform the operations. Do the operation inside the ( )first. 96÷ 12 =8 PhP400 x 8 = PhP3 200 PhP3 200 – 500=PhP2 700 Answer The vendor earned PhP270
  • 132. Math 3 1. Annie is using plastic string to make key chains. Initially, she had 175 cm of plastic string. She used 30 cm for one key chain. Is Annie going to have enough plastic string for five more key chains of the same size? Let’s have more examples:
  • 133. Do you have any idea on how to solve this problem? Let’s figure out!
  • 134. Understand What facts do you know? • The roll of string is 175 cm long. • Each keychain is 30 cm long. • She has already used 40 cm of string. What do you need to find? • Does Annie have enough string to make 6 more key chains?
  • 135. Plan (The teacher should bring the following to facilitate the learning process. Use the act it out strategy with a piece of string that is 175 cm long. Mark off the amount used for the first keychain, 30 cm, and continue marking off lengths of 30 cm until there are six more key chains or no more string left
  • 136. Solve Notice that there is only enough string for 4 more key chains. So, there is not enough plastic string for 5 more 30 cm 30 cm 30 cm 30 cm 30 cm 25 cm 0 30 60 90 120 150 30
  • 137. Check Look back. Is the answer reasonable? Check by multiplying. Since 30 × 5 = 150 and 30 × 6 = 180, there is only enough string for 5 key chains in all, not 6.
  • 138. has 15 pieces of stars. She wants to share them equally with her 3 friends,how many stars will each of them receive? Can you think of different ways to solve this? Can we group the stars into 3 equally?
  • 139. Pupil 1 will give the stars one at a time to her friends until all the stars are given. Pupil 2 will give 5 stars at once to each of her friends. So, each of them will receive 5 stars. Possible Answers:
  • 140. Instruct the pupils to work in pair. Draw a picture to illustrate the sharing of 6 pieces of 50-peso bills equally distributed among 5 friends. How much will each receive? Performing the Activities
  • 141. Math 3 Gawain 1 Basahin ang suliranin o word problem at sagutin ang tanong. Ipaliwanang ang inyong sagot. Isulat ang sagot sa sagutang papel.
  • 142. 1. Naghanda ng 60 tinapay ang nanay para sa mga panauhin. May 7 mesa siyang lalagyan na may 7 panauhing nakaupo. Sapat ba ang bilang ng tinapay na inihanda ng nanay? Bakit?
  • 143. 2. May PHP850 si Ana para pambili ng pagkain niya. Kung maglalaan siya ng PHP120 bawat araw., Ilang araw tatagal ang pera niya?
  • 144. 3. Si G. Santos ay may 2161 piraso ng mangga. Kung ilalagay niya ito sa 200 basket na may pare-parehong bilang, Ilang mangga ang mailalaman sa bawat basket? Ilan namang piraso ng mangga ang hindi mailalagay sa basket?
  • 145. Math 3 1.) Yes, 60 – (7 x 7) = 60 – 49 = 11sandwiches left 2.) PhP850 ÷ 120 = 7 r 10; 10 pesos would be left after 7 days 3.) 2 161 ÷ 200 = 10 r 161, 10 baskets with 200 mangoes and 161 mangoes will be put in one basket
  • 146. What are the different strategies in finding the answer? Processing the Activities
  • 147. Math3 Reinforcing the Concept Divide the class into six groups. Distribute the activity cards. Ask them to show their solution and post their work after answering the activity.
  • 148. Groups 1 and 2 Jovie saves PhP 225.00. She would like to buy identical gifts for her 3 friends. How much is the cost of gift that she would give to them? Math 3
  • 149. Groups 3 and 4 Math 3 Look at the table below. 1. Helper A can carry 10 boxes of rambutan 2. Helper B can carry 8 boxes of rambutan 3. Helper C can carry 6 boxes of rambutan
  • 150. How many different ways could the three helpers divide the boxes of rambutan? How do you know that you have shown all the possible ways of grouping 24?
  • 151. Groups 5 and 6 Math 3 There are 225 pupils in Grade 3. If the pupils are divided equally into 5 sections, how many pupils are there in each section?
  • 152. Illustrate the sentences below and write the number sentence. Math 3 1. PhP3 200 is given to 80 pupils. 2. Mario bought 3 kilos of rice worth PhP112. 3. 32 pieces of pandesal given to 4 pupils
  • 153. Math 3 4. 60 goats owned equally by 6 farmers 5. How many 50’s are there in 6 000?
  • 154. Summarizing the Concept What are the different strategies /methods in solving word problems?
  • 155. Math 3 Gawain 2 Basahin ang sumusunod na suliranin o word problem at sagutin ang mga tanong. Gamitin ang iba’t ibang paraan para makuha ang tamang sagot sa pamamagitan ng pagguhit o pagpapangkart.
  • 156. 1. May 32 piraso ng cupcake na ipamimigay sa 8 mag-aaral. Ilang cupcake ang matatanggap ng bawat mag-aaral? 2. Si Mrs. Ramos ay may PHP750, maaari ba niyang mabigyan ng PHP90 ang 5 niyang anak at 2 pamangkin para sa 3 araw na baon? Bakit?
  • 157. 3. Ipamimigay ang 15 balot ng noodles, 20 kilo ng bigas, at 5 piraso ng sabong panlaba sa mga nasalanta ng bagyo. Paano mo hahatiin ang mga ito sa 5 pamilya? Gumawa ng sariling listahan.
  • 158. 4. Maari bang magkaroon ng 35 piraso ng PHP50 sa 6 000? Bakit? 5. Suriin ang mga talaan ng bagay sa ibaba. Pumili ng mga bagay na maaari mong mabili sa PHP500.
  • 161. 1. 4 cupcakes 2. Yes, because PhP750 ÷ (5 + 2) = PhP107 with PhP1 remaining 3. 3 packs of noodles, 4 kilos of rice and 1 bar of laundry soap for each household Answer Key:
  • 162. 4. Yes, because 35 x PhP50 = PhP1 750, PhP1 750 is less than PhP6 000. 5. Pupils answers may vary
  • 163. Math 3 Gawain 3 Lutasin ang suliranin o word problem sa ibaba. Ipakita ang iba’t ibang paraan ng pagsagot sa pamamagitan ng paglalarawan at pagpapangkat. Isulat ang tamang sagot sa kuwaderno.
  • 164. 4. Ilang pangkat ng 5 mayroon sa 125? 5. Ilang pangkat ng 100 mayroon sa 600? 1. Kung papangkatin ang 76 sa 12, ilang pangkat mayroon? 2. May ilang PHP20 mayroon sa PHP920? 3. Ilang pangkat ng PHP50 mayroon sa PHP750?
  • 165. 1. Pupils may draw 76 objects and group them into 12 sets of 6. The number of objects left is 4. 2. PhP920 ÷ 20 = 46 twenty-pesos Key Answer:
  • 166. 5. 6 groups of 100 3. 15 4. 25
  • 167. 1. A baker bakes 1 720 cookies. He placed 25 pieces in each plastic bag. How many plastic bags of cookies were there in all? 2. Seven boys ate their lunch at the canteen. The meal cost PhP238. They agreed to share equally the expenses. What was the share of each boy?
  • 168. 1. 68 plastic bags with 25 cookies and 20 remaining cookies 2. PhP34 share of each boy Key Answer:
  • 169. 1. A sampaguita vendor gathered 800 sampaguita flowers. She used 10 flowers to make a garland. How many garlands did she make? 2. Mr Reyes‘s store had 144 pairs of socks. The socks were sold in packages of 12 pairs. How many packages were there?
  • 170. 3. Mrs. Abellardo withdrew PhP2 500 from the bank. She bought grocery items worth PhP1 375 and the remaining amount would be given equally among her 3 children as their weekly allowance. How much would each child receive? Explain your answer.
  • 171. Key Answer: 1. 80 garlands 2. 12 packages 3. PhP375 per child
  • 172. Math 3 Gawain 4 Kung ikaw ay may PHP200 para sa isang linggo, paano mo ito gagastusin? Gumawa ng sariling talaan kung paano mo gagastusin sa loob ng 5 araw. Isulat sa papel ang inyong sagot.
  • 173. Halaga na ibinigay: PHP200 Produktong bibilhin Halaga