Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 28 − 45 by rounding each number to the nearest 10: ______
- Estimate 31 + 23 by rounding each number to the nearest 10: ______
- Estimate 32 + 55 by rounding each number to the nearest 10: ______
- Estimate 22 − 38 by rounding each number to the nearest 10: ______
- Estimate 43 + 37 by rounding each number to the nearest 10: ______
- Estimate 56 − 43 by rounding each number to the nearest 10: ______
- Estimate 51 + 65 by rounding each number to the nearest 10: ______
- Estimate 82 − 21 by rounding each number to the nearest 10: ______
- Estimate 60 − 50 by rounding each number to the nearest 10: ______
- Estimate 51 + 29 by rounding each number to the nearest 10: ______
- Estimate 86 + 33 by rounding each number to the nearest 10: ______
- Estimate 55 + 71 by rounding each number to the nearest 10: ______
- Estimate 75 − 33 by rounding each number to the nearest 10: ______
- Estimate 50 − 55 by rounding each number to the nearest 10: ______
- Estimate 22 + 69 by rounding each number to the nearest 10: ______
- Estimate 32 − 58 by rounding each number to the nearest 10: ______
- Estimate 79 + 26 by rounding each number to the nearest 10: ______
- Estimate 69 + 55 by rounding each number to the nearest 10: ______
- Estimate 60 − 40 by rounding each number to the nearest 10: ______
- Estimate 85 − 80 by rounding each number to the nearest 10: ______