Adding and Subtracting Fractions Unlike Denominators

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

(Choose one that is true) When you add or subtract fractions with unlike denominators you..

• Add both the numerators and denominators

• Change the denominator by picking a random number then divide

• Find a common denominator then add or subtract the numerators

• none of these are true

What is a common denominator for this problem? 3/16 + 2/4 =

• 24

• 8

• 16

• 32

What is a common denominator of 1/4 and 1/3?

• 4

• 3

• 12

• 8

Complete the equivalent fraction.

• 6

• 9

• 15

• 7

Complete the equivalent fraction.

• 2

• 12

• 1

• 4

Complete the equivalent fraction.

• 2

• 4

• 6

• 12

Solve:

8/9 - 1/3 =

• 7/6

• 5/9

• 2/3

• 8/27

Solve:

• 9/10

• 1/2

• 5/10

• 4/10

• 5/6
• 1
• 1  1/6
• 8/6