The document outlines the conversion of common units of measure such as length, mass, and volume in the metric system, including meters, kilograms, and liters, alongside their respective prefixes. It also provides instructions for converting these measurements and offers example problems for practice. Time conversions and the relationship between different units of time are presented, facilitating better understanding of measurement concepts.

1. Math4 Q2 LAS Conversion of Units
Common Units of measure
• meter and centimeter,
• kilometer and meter,
• kilogram and gram,
• gram and milligram, and
• liter and milliliter.
Time Measures
• seconds to minutes,
• minutes to hours,
• hours to days,
• days to weeks
• weeks to months, and
• months to years.
Problem solving on conversion
of units of length, mass,
capacity, and time, including
problems involving elapsed
time in hours and minutes

2. Measurement of Length, Mass, and Volume
Meter (m):
The fundamental unit of
length in the metric system.
100 centimeters = 1 meter
Gram (g):
The basic unit of mass in the
metric system
1,000 grams = 1 kilogram
Liter (L):
The primary unit of volume in
the metric system
1,000 milliliters = 1 liter
Metric Prefixes
Centi (c):
Means one-hundredth (1/100)
1 meter = 100 centimeters
Kilo (k):
Means one thousand (1,000)
1 kilogram = 1,000 grams
Milli (m):
Means one-thousandth
(1/1,000).
1 liter = 1,000 milliliters

3. More Metric Prefixes
Prefix Symbol Factor Example in
length:
2m
Example in
Mass:
45g
Example in
Volume:
500mL
Kilo k 1000 0.002km 0.045kg 0.0005kL
hecto h 100 0.02hm 0.45hg 0.005hL
deca da 10 0.2dam 4.5dag 0.05daL
1 2m 45g 0.5L
deci d 0.1 20dm 450dg 5dL
centi c 0.01 200cm 4500cg 50cL
milli m 0.001 2000mm 45000mg 500mL
Note: The measurements remain the same when
converted.
Example: John measured the length of a table as 200cm.
James measured the length of the same

4. Examples: Let’s Measure!
Measure the following using the appropriate unit
of measure.
1. Length of the teacher’s table
2. Length of the blackboard
3. Length of the classroom
4. Lenth of a ballpen
5. Height of a water tumbler
6. Length of a bond paper
7. Height of the door
8. Height of a person

5. How will you measure the following?
1. The distance from one corner of the school lot to another
2. The distance you walk from home to school
3. The distance from school to the town center, San Jose

6. Converting Measurements
• Use the conversion chart to convert measurements from one
unit to another.
• Examples:
1. How many centimeters are in 12 meters?
2. How many decimeters are in 54 hectometers?
3. How many kilometers are in 3500 meters?
4. How many meters are in 23456 millimeters?
k h da d c m Answer
1 2 0 0 1200cm
5 4 0 0 0 54000dm
3 .5 0 0 3.5km
2 3 .4 5 6 23.456m

7. Activity 1: Make a conversion chart and complete
the given statements.
a) 5 m = ____ cm
b) 300 cm = ____ m
c) 12 m = ____ cm
d) 1,500 cm = ____ m
e) 3 km = ____ m
f) 5,000 m = ____ km
g) 10 km = ____ m
h) 7,500 m = ____ km
i) 4 kg = ____ g
j) 2,000 g = ____ kg
k) 7 kg = ____ g
l) 9,500 g = ____ kg
m) 8 g = ____ mg
n) 4,000 mg = ____ g
o) 15 g = ____ mg
p) 12,500 mg = ____ g
q) 2 L = ____ mL
r) 3,000 mL = ____ L
s) 6 L = ____ mL
t) 4,500 mL = ____ L

8. Activity 1: Make a conversion chart and complete
the given statements.
a) 5 m = _500_ cm
b) 300 cm = _3_ m
c) 12 m = _1200_ cm
d) 1,500 cm = _15_ m
e) 3 km = _3000_ m
f) 5,000 m = _5_ km
g) 10 km = _1000_ m
h) 7,500 m = _7.5_ km
i) 4 kg = _4000_ g
j) 2,000 g = _2_ kg
k) 7 kg = _7000_ g
l) 9,500 g = _9.5_ kg
m) 8 g = _8000_ mg
n) 4,000 mg = _4_ g
o) 15 g = _15000_ mg
p) 12,500 mg = _12.5_ g
q) 2 L = _2000_ mL
r) 3,000 mL = _3_ L
s) 6 L = _6000_ mL
t) 4,500 mL = _4.5_ L

9. Measurement of Time
Second (s)
The fundamental unit of time in
the metric system. It's the
duration of one tick of a clock's
second hand.
Relationship of Second with
Other Time Units
1 minute = 60 seconds
1 hour = 60 minutes
1 day = 24 hours
1 week = 7 days
1 month = 4 weeks
(approximately)
1 year = 12 months
How We Keep Track of Time
We keep track of time using a
clock or a watch. A clock or a
watch tells how many hours and
how many minutes have passed
since midnight or midday.
Examples
7:15 AM – This means that 7
hours and 15 minutes have
passed since midnight.
4:30 PM – This means that 4
hours and 30 minutes have
passed since midday.

10. Activity 2: Complete the given statements.
a) 120 seconds = ____ minutes
b) 5 minutes = ____ seconds
c) 300 seconds = ____ minutes
d) 2.5 minutes = ____ seconds
e) 180 minutes = ____ hours
f) 3 hours = ____ minutes
g) 45 minutes = ____ hours
h) 1.5 hours = ____ minutes
i) 48 hours = ____ days
j) 3 days = ____ hours
k) 72 hours = ____ days
l) 1.5 days = ____ hours
m) 14 days = ____ weeks
n) 2 weeks = ____ days
o) 21 days = ____ weeks
p) 1.5 weeks = ____ days
q) 8 weeks = ____ months
r) 2 months = ____ weeks
s) 12 weeks = ____ months
t) 1.5 months = ____ weeks
u) 24 months = ____ years
v) 2 years = ____ months
w) 36 months = ____ years
x) 1.5 years = ____ months

11. Activity 3: Solve each problem.
1. A jeepney driver needs to cover the distance of his route
from Manila to Quezon City, which is 12 kilometers. If he
has already traveled 5,000 meters, how much more distance
does he need to cover?
2. Maria bought 3 kilograms of rice and 500 grams of chicken
for her family dinner. How many grams did she buy in total?
3. A barangay is organizing a clean-up drive and needs to fill
water containers. If each container holds 5 liters and they
have 25 containers, how many milliliters of water do they
need in total?
4. A student starts studying for his exam at 2:15 PM and
finishes at 4:45 PM. How long did he study?
5. A bus leaves for Cebu City at 9:30 AM but has a delay of 45
minutes due to traffic. If it takes the bus a total of 5 hours
to reach Cebu City after leaving, what time will it arrive?