Add and Subtract Fractions

To add 2/5 + 3/4 you need to use equivalent fractions with a common denominator. Which pair of fractions could NOT be used as equivalent fractions to solve this problem?

• 8/20 and 15/20

• 2/20 and 3/20

• 16/40 and 30/40

• 24/60 and 45/60

In a physical education class 7/8 of the students are wearing sneakers. What fraction of the class is not wearing sneakers?

• 1/8

• 14/16

• 1 7/8

• not enough information to answer this question

A librarian ordered new books for the library. Of the new books ordered, 1/3 are science, 2/5 are biography and the rest of the books are fiction. What fraction of the books ordered are fiction?

• 3/5

• 3/8

• 4/15

• 11/15

The length of Eagle Trail is 6 3/5 miles. The length of Bear Trail is 2 7/10 miles. What is the difference in length between Eagle Trail and Bear Trail?

• 3 1/10 miles

• 3 9/10 miles

• 4 1/10 miles

• 4 4/5 miles

Jean needs 2 1/2 cups of flour to make sugar cookies and 3 1/4 cups of flour to make peanut butter cookies. What is the total number of cups of flour that Jean will need to make both kinds of cookies?

• 5 2/6

• 5 3/4

• 6 2/6

• 6 3/4

Mrs. Krause asked her students to solve the equation 6/7 + 5/6 = n

Which of the following is closest to the value of n?

• 1/4

• 3/4

• 1 1/2

• 5 1/2

Pam needs to practice clarinet for 10 hours this week. On the first day of this week, she practiced for 1 1/2 hours. On the second day of this week, she practiced for 1 1/4 hours.

How many more hours does Pam need to practice this week?

• 7 1/4

• 7 4/6

• 8 2/6

• 8 3/4

What is the value of 9 2/3 - 4 1/5?

• 5 1/8

• 5 7/8

• 5 5/15

• 5 7/15