Adding and Subtracting Unlike Denominators Word Problems

Mark's new puppy ate 1 1/3 cups of dog food on Monday and 1 4/5 cups of dog food on Tuesday. How much more dog food did the puppy eat on Monday than on Tuesday?

• 1/5 cup

• 7/15 cup

• 3/5 cup

• 2/3 cup

When or adding or subtracting fractions, you must find ____ ____

• common numerators

• common denominators

• improper fractions

• mixed numbers

Find the sum as a mixed number in lowest terms.

• 1 and 1/10

• 2 and 3/5

• 1 and 1/2

• 2

Sally is painting her house. She used 1/8 of a gallon of paint in her bathroom, and 2/6 of a gallon of paint in her bedroom. How much paint did she use in all?

• 11/24

• 3/14

• 3/24

• 11/14

Kayla has 3/9 of a pizza and Lille gave her 2/9 of a pizza. How much pizza does Kayla have now?

• 5

• 5/9

• 1/9

• 6/9

What is the least common denominator of the fractions 1/4 and 2/3 ?

• 2

• 4

• 8

• 12

Ryan practiced piano for 3/10 of an hour and soccer for 1/2 an hour. In simplest form, how long did he practice altogether?

• A. 8/10 Hr

• B. 1/5 Hr

• C. 4/5 Hr

• D. 1/3 Hr

Sam used 1/2 of a pint of paint on Thursday and 3/8 of a pint on Sunday. In simplest form, how much paint did Sam use altogether?

• 4/10 Pt

• 3/4 Pt

• 7/8 Pt

• 5/8 Pt

Sara bought 2 3/4 pounds of chocolate. Daniel ate 3/6. Which equation will help you find how much chocolate Sara has left?

• 2 3/4 + 3/6

• 3/6 + 2 3/4

• 2 3/4 - 3/6

• 3/6 - 2 3/4

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number