Estimating fractions using benchmarks

Front

What is a benchmark fraction?

Back

A benchmark fraction is a simple fraction that is easy to understand and use for estimation, such as 0, 1/2, and 1.

Front

How do you estimate the sum of fractions using benchmark fractions?

Back

To estimate the sum, round each fraction to the nearest benchmark fraction and then add them.

Front

Estimate the sum: 9/10 + 2/10

Back

1

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

Estimate the sum: 7/8 + 3/8

Back

1 1/2

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you estimate the difference of fractions using benchmark fractions?

Back

To estimate the difference, round each fraction to the nearest benchmark fraction and then subtract them.

Front

Estimate the difference: 9/10 - 8/10

Back

0

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

Estimate the difference: 4/8 - 2/8

Back

1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Estimate the difference: 10/12 - 5/12

Back

1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the value of 1/2 in decimal form?

Back

0.5

Front

What is the value of 1 in fraction form?

Back

1/1

Tags

CCSS.3.NF.A.3C