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