7CH1.4

3/4  -  1/2

• 1/3

• 1/4

• 2/3

• 1/5

7/8 - 7/12

• 7/24

• 1/4

• 7/12

• 4/24

1/2  -  1/8

• 5/8

• 2/5

• 3/8

• 5/6

8/15  -  1/6

• 2/3

• 7/15

• 8/11

• 11/30

5/8  -  9/16

• 2/3

• 1/16

• 15/16

• 7/8

11/20  -  2/5

• 3/20

• 9/15

• 8/11

• 7/20

Before you add or subtract fractions what must be the same?

• Numerator

• Denominator

• Just add

• Just subtract

• 3/20

• 1/1

• 3/9

• 1/9

• 2/15

• 2/0

• 1/2

• -1/2

What is the difference of these fractions in lowest terms?

• 7/9

• 1/5

• 12/20

• 1/20