Estimation Strategies Worksheets
Practice estimation strategies using explicit place-value reasoning.
Before you begin
Recognize digits and read a place-value chart.
Worked example
Estimate 365 + 266 by first rounding each number to the nearest 100.
- 365 rounds to 400; 266 rounds to 300.
- Use the rounded values in the operation.
Answer: 700
Check your result using the method in the example before moving to the next question.
Choose your level
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
- Easy: Start with the preview and follow the worked example.
- Medium: Practice the same exercise types with a fresh numbered set.
- Hard: Use another set to practice explaining and checking your answers.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
Estimate 734 + 553 by first rounding each number to the nearest 100.
2
Estimate 797 − 600 by first rounding each number to the nearest 100.
3
Estimate 480 + 325 by first rounding each number to the nearest 100.
4
Estimate 982 − 311 by first rounding each number to the nearest 100.
5
Estimate 714 + 578 by first rounding each number to the nearest 100.
6
Estimate 386 − 163 by first rounding each number to the nearest 100.
Answer Key
1. 13002. 2003. 8004. 7005. 13006. 200