Adding and Subtracting Fractions Unlike Denominators Models

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

• 1 1/12

• 3/4

• 2/3

• 1 1/2

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

Add the fractions. Simplify if needed.

• 1

3/4 - 2/10

• 11/20

• 9/10

• 11/24

• 9/4

9 1/2 - 5 1/4

• 4 1/4

• 4 1/2

• 17/4

• 4 3/4

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

• 12

• 24

• 8

• 16

Matthew has two bags of potato chips of equal size in his pantry. The models show the fractional portion of potato chips he has in each of the two bags. Which equation can be used to determine the total amount potato chips Matthew has in the two bags?

The circles show the fraction of a mile track that Pablo and Susana ran. What is the total distance that the two children ran?

• 2 miles

• 
• 
• 

Which problem represents the picture?

• 
• 
• 
•