Adding and Subtracting Fractions with Different Denominators

17/15

12/15

4/5

3/6

5/6

1 whole

2/6

9/12

4/12

3/12

2/12

5/12

1/6

3/18

4/9

6/18

Find the greatest common factor to change your denominator

Change the denominator by picking a random number then divide

Find the least common multiple to change your denominator

none of these are true

11/20

9/10

11/24

9/4

32/40

1 7/40

2 5/7

1 1/2

5/9

1/10

2 1/10

2 2/10

1/10

8/5

1/5

8/0

find the common denominators, add or subtract, change the numerators

multiply the denominators, add or subtract the numerators, simplify, divide the fraction

Find the least common denominators, what you do to the top do to the bottom, add or subtract, simplify

add or subtract, simplify, multiply denominators