Estimating Sums and Differences of Like Fractions

Estimate the sum by replacing each fraction with 0, 1/2, or 1.

1/10 + 5/10 =

• 0

• 1/2

• 1

• 1 1/2

• 2

Estimate the difference by replacing each fraction with 0, 1/2, or 1.

24/25 - 9/10 =

• 0

• 1/2

• 1

• 1 1/2

• 2

Estimate the difference by replacing each fraction with 0, 1/2, or 1.

11/20 - 2/35 =

• 0

• 1/2

• 1

• 1 1/2

• 2

Estimate the sum or difference:

5/8 - 1/5

• 0

• 1/2

• 1

• 1

• 5/12

• 6/12

• 1/12

• 4/12

Estimate the sum or difference:

1/6 + 3/8

• 0

• 1/2

• 1

Estimate the sum or difference:

11/12 + 6/10

• 0

• 1

• 1 1/2

Estimate the sum or difference:

9/10 - 1/2

• 0

• 1/2

• 1