PP. Estimating Sums and Differences
Use benchmarks to estimate each sum or difference. Circle the best estimate for each problem. Use fraction circle pieces or the Fractions on Number Lines Chart in the Student Guide Reference section.
- 4/5 + 7/8 =
close to 1 close to 2 - 3/8 − 3/9 =
close to 0 close to 1 - 1/12 + 3/7 + 5/8 =
close to 1/2 close to 1 - 7/11 − 2/9 =
close to 1/2 close to 1 - 4/5 − 3/8 =
- 1/12 + 5/10 =
close to 1/2 close to 1