Adding and Subtracting Fractions

What is the least common denominator for 6/7 and 1/2?

• 12

• 14

• 7

• 6

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

5/12 + 1/3

• 6/12

• 9/12

• 6/15

• 3/4

5/8  -  9/16

• 2/3

• 1/16

• 15/16

• 7/8

What is the difference of these fractions in lowest terms?

• 2/4

• 0

• 0/4

• 1/2

8/9 - 1/3 = 

• 7/6

• 5/9

• 2/3

• 8/27

Pam walks 7/8 of a mile to school.  Paul walks 1/2 of a mile to school.  How much farther does Pam walk than Paul? 

• 3/8

• 4/5

• 1 3/8

• 3/4

Marty made two types of cookies.  He used 2/3 cup of sugar for one recipe and 1/4 cup  of sugar for the other.  How much sugar did he use in all? 

• 5/12

• 3/7

• 11/12

• 1/3

• 2/5

• 5/6

• 4/6

• 1/5