Using Benchmark Fractions to Estimate Sums and Differences II

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 round a fraction to the nearest benchmark?

Back

To round a fraction to the nearest benchmark, compare it to the benchmark fractions (0, 1/2, 1) and choose the one it is closest to.

Front

Round 8/9 to the closest benchmark.

Back

1

Front

Round 14/17 to the closest benchmark.

Back

1

Front

Round 4/20 to the closest benchmark.

Back

0

Front

If Mia uses 1/5 of a bag of gravel in the morning and 11/12 in the afternoon, how much gravel does she use in one day?

Back

1 bag

Front

Round 1/3 to the closest benchmark.

Back

1/2

Front

What is the purpose of using benchmark fractions in estimation?

Back

Benchmark fractions help simplify calculations and make it easier to estimate sums and differences.

Front

What is the benchmark fraction for 0.5?

Back

1/2

Front

If a fraction is greater than 1/2 but less than 1, to which benchmark does it round?

Back

1