Topic 8: Add and Subtract Fractions

1. Which of the following fractions can be replaced with ½ when estimating with fractions? Select all that apply.

• 10/12

• 7/15

• 9/17

• 3/5

• 1/9

Tags

CCSS.4.NF.A.2

1. Which of the following is a common denominator of 7/9 and 1/5?

• 40

• 18

• 45

• 36

Estimate the sum of 9/10 and 5/6

• 1

• 1 1/10

• 1 1/6

• 2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Elizabeth has 2 ribbons. One is 1/7 foot long, and the other is 2/5 foot long.

Select the fractions that show 1/7 and 2/5 using a common denominator.

• 2/13

• 6/13

• 5/35

• 7/35

• 14/35

What is the total length of the ribbon if one length is 1/7 foot long and one is 2/5 foot long?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 18 2/3

• 18 7/12

• 19 1/12

• 19 1/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 2 inches

• 4 inches

• 13 inches

• 14 inches

Tags

CCSS.7.NS.A.1C

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 1 hour

• 2 hours