Review Add Subtract Multiply Fractions

What do you need to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

2/12 + 3/12 = ______

(Simplify if necessary)

• 5/12

• 5/24

• 6/12

• 6/144

5/7 - 2/7 = ______

(Simplify if necessary)

• 3/7

• 3/0

• 1/2

• 3/4

3/8 + 2/4 = ______

(Simplify if necessary)

• 5/12

• 5/8

• 7/8

• 6/8

3/6 x 2/10 =

• 3/8

• 1/10

• 5/60

• 5/16

1/9 + 2/27 = ______

(Simplify if necessary)

• 3/27

• 5/27

• 3/27

• 3/36

Marla ate 1/4 of a pizza, and Bob ate 6/8 of a different pizza. How much more pizza did Bob eat than Marla?

• 6/32

• 2/8

• 1/2

• 5/4

When Leila weighed her kitten for the first time, it weighed 4  1/2 pounds. The next time Leila weighed her kitten, it had gained 2  1/4 pounds. How much did the kitten weigh?

• 7    3/4 pounds

• 6   3/4 pounds

• 6    1/3 pounds

• 2   1/4 pounds

(Simplify if necessary)

• 14  17/30

• 13 47/30 

• 1/2

• 15  2/3

To multiply two fractions...

• multiply the numerators and keep the denominators constant.

• multiply the numerators and multiply the denominators.

• keep the numerators constant and multiply the denominators.

• guess and check.