Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 23 − 30 by rounding each number to the nearest 10: ______
- Estimate 54 − 23 by rounding each number to the nearest 10: ______
- Estimate 79 − 72 by rounding each number to the nearest 10: ______
- Estimate 60 − 27 by rounding each number to the nearest 10: ______
- Estimate 86 − 40 by rounding each number to the nearest 10: ______
- Estimate 77 + 25 by rounding each number to the nearest 10: ______
- Estimate 77 + 53 by rounding each number to the nearest 10: ______
- Estimate 40 − 75 by rounding each number to the nearest 10: ______
- Estimate 30 + 74 by rounding each number to the nearest 10: ______
- Estimate 72 + 52 by rounding each number to the nearest 10: ______
- Estimate 79 − 70 by rounding each number to the nearest 10: ______
- Estimate 27 − 53 by rounding each number to the nearest 10: ______
- Estimate 83 − 53 by rounding each number to the nearest 10: ______
- Estimate 89 + 82 by rounding each number to the nearest 10: ______
- Estimate 56 + 75 by rounding each number to the nearest 10: ______
- Estimate 71 + 40 by rounding each number to the nearest 10: ______
- Estimate 41 − 65 by rounding each number to the nearest 10: ______
- Estimate 24 − 80 by rounding each number to the nearest 10: ______
- Estimate 25 − 77 by rounding each number to the nearest 10: ______
- Estimate 41 − 48 by rounding each number to the nearest 10: ______