Adding and Subtracting Fractions

Subtract Fractions with Like Denominators

100

Subtract the Fractions:

4/6 - 1/6 =

 3/6 or 1/2

200

Subtract the Fractions:

4/12 - 3/12 =

1/12

300

Subtract the Fractions:

40/100 - 20/100 =

Daily Double: Simplify the fraction

20/100  or 2/10 or 1/5

400

Subtract the Fractions:

3/4 - 2/4 =

1/4

500

Subtract the Fractions:

87/100 - 55/100 =

32/100 or 16/50 or  8/25

Subtract Fractions with Unlike Denominators

100

Subtract: 

6/9-3/8

7/24

200

Subtract:

2/9-2/12

2/36 or  1/18

300

Subtract: 6/7 - 8/14

4/14 or 2/7

400

Subtract:

2/3 - 1/4

5/12

500

Subtract: 

11/7 - 2/5

41/35 or  1 6/35

Add Fractions with Like Denominators

100

Add the Fractions:

1/2 + 1/2 =

1 or 2/2

200

Add the Fractions:

9/10 + 5/10 =

1 4/10 = 1 2/5

300

Add the Fractions:

5/10 + 14/10 =

19/10 = 1 and 9/10

400

Add the Fractions:

11/10 + 5/10 =

16/10 = 1 and 6/10 = 1 and 3/5

500

Add the Fractions:

4/10 + 9/10 =

13/10  = 1 and 3/10

Add fractions with unlike denominators

100

Add the fractions:

3/4 + 2/8 =

8/8 or 1 whole

200

Add the Fractions:

2/10 + 1/2 =

7/10

300

Add the Fractions:

3/4 + 1/5 =

19/20

400

Add the Fractions:

2/3 + 4/5 =

1 7/15

500

Add the Fractions:

3/4 + 8/10=

31/10  or  3 1/10

Vocabulary

100

The top number in a fraction is called the

The numerator

200

What 2 operations require fractions to have the same denominator (bottom)?  *Fraction rap*

Multiply, Divide, Add, Subtract

Add and subtract

300

The bottom number in a fraction is called

The denominator

400

What needs to be done before you can add 1/4 + 3/8?

The denominator (bottom number) needs to be the same for both fractions.

"Gettin the bottoms to be the same"

500

To add or subtract fractions you must have the same...

denominator (bottom number)