FRACTIONS UNIT
Numerator = # on top
Denominator = # on the
bottom
(down below)
The Denominator
How many equal parts are
described?
How many equal parts are in all
(total)?
You can also write it:
1/2
Parts of a Whole
◻Whole = 1
complete thing
◻Different from
a hole in the
ground
1 WHOLE fraction
🡪
◻ The top number and the bottom are the
same!
4 5 8 55 86
4 5 8 55
86
◻Give me some more fractions
that equal 1 whole!
Parts of a Whole
What’s the fraction we should write
for each?
Write a fraction for the part of each flag that
is red.
Italy Indonesia Taiwan
Austria Germany Spain
Parts of a Set
◻ What is the total number of
fruits?
? This will be your denominator!
? What fraction of this set are
bananas?
? What fraction of this set are
oranges?
? What fraction of this set are
apples?
What fraction of each set is blue?
Draw a picture to
show the fraction
3/5 as part of a set!
Mixed Number
◻Mixed Number: A whole
number WITH a fraction.
Talk with a
partner, think
up and write 2
more MIXED
NUMBERS on
your worksheet
packet page.
Whole Number
Fracti
on
Mixed Number Models
◻Mixed Number = A whole + a fraction
3 wholes + 5/6 (fraction) = mixed
number
Complete These Statements:
◻A mixed number is the sum of a
_____________
And a ________________.
◻The __________________ is the number on the
bottom of a fraction, and the
_________________ is the number on the top of
a fraction.
Fractions as Division Statements
◻Fractions are another way to write a division
statement!
Fractions and Division are Related!
4
5
Fraction
Division
The numerator
always goes
inside the house!
The
denominator
always goes
OUTSIDE the
house!
Improper Fractions: YOU CAN DIVIDE!
◻And get a whole number or mixed number!
12
4
Proper Fractions: You CANNOT get a whole
number or mixed number.
2
3
Anne & Pete shared a pizza.
How much did they eat in total?
How do we describe this using fractions?
Dave & Trish shared a chocolate bar.
How much did they eat in total?
How do we describe this using fractions?
Mike & Denise shared a pizza.
How much did they eat in total?
How do we describe this using fractions?
To add fractions,
the size of the pieces,
the denominators
must be the same size.
Tammy & Mo shared a chocolate bar.
How much did they eat in total?
How do we describe this using fractions?
To add fractions,
the size of the pieces,
the denominators
must be the same size.
Derek & Kim shared a pizza.
How much did they eat in total?
How do we describe this using fractions?
To add fractions,
the size of the pieces,
the denominators
must be the same size.
Adding Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
Adding Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
Adding Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
Adding Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
× 2
× 2
Adding Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
× 3
× 3
Adding Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
× 4
× 4
Adding Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
× 3
× 3
What common denominator can we use?
Adding Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
× 3
× 3
What common denominator can we use?
× 5
× 5
× 2
× 2
Adding Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
× 3
× 3
What common denominator can we use?
× 3
× 3
× 4
× 4
How do we describe this subtraction using fractions?
To subtract fractions,
the size of the pieces,
the denominators
must be the same size.
Subtracting Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
Subtracting Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 2
× 2
What common denominator can we use?
Subtracting Fractions
DEM
O
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
Subtracting Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
× 2
× 2
× 5
× 5
Subtracting Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
× 4
× 4
× 5
× 5
Subtracting Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
× 5
× 5
× 8
× 8
Subtracting Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
× 2
× 2
× 3
× 3
Adding & Subtracting Fractions
DEM
O
YOUR
TURN
Using equivalent fractions,
we need to make the denominators the same.
× 3
× 3
× 4
× 4
What common denominator can we use?
Using equivalent fractions,
we need to
make the denominators the same.
What common denominator
can we use?
1
=
3
Cara
1
3 –
1
1
1
3 –
1
1
3 –
1
1
Jadi Sisa cokelat Riko ada 2 ⅕
Cara
2
–
– =
= 2
Jadi Sisa cokelat Riko ada 2
2
1
1
1
1
1
1
KPK (2,6) = 6
1
1
1
KPK (2,6) = 6
1
1
1
–
3
1
1
1
–
3
1
1
1
–
3
1
1
1
–
3 =
Jadi, sisa coklat
Andra bagian
+ 2 = 2
Jadi, saat ini
Andra memiliki
2 cokel
at
1 1 1
1 1 1
+
1 1 1
+
KPK (4,6) = 12
1 1 1
+
KPK (4,6) = 12
1 1 1
Jadi, Cokelat Andra saat ini berjumlah

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