Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 21 − 51 by rounding each number to the nearest 10: ______
- Estimate 48 − 30 by rounding each number to the nearest 10: ______
- Estimate 76 + 53 by rounding each number to the nearest 10: ______
- Estimate 89 + 78 by rounding each number to the nearest 10: ______
- Estimate 55 − 65 by rounding each number to the nearest 10: ______
- Estimate 64 − 86 by rounding each number to the nearest 10: ______
- Estimate 45 + 29 by rounding each number to the nearest 10: ______
- Estimate 41 + 73 by rounding each number to the nearest 10: ______
- Estimate 34 + 22 by rounding each number to the nearest 10: ______
- Estimate 37 + 35 by rounding each number to the nearest 10: ______
- Estimate 29 − 68 by rounding each number to the nearest 10: ______
- Estimate 76 + 79 by rounding each number to the nearest 10: ______
- Estimate 32 + 36 by rounding each number to the nearest 10: ______
- Estimate 27 − 73 by rounding each number to the nearest 10: ______
- Estimate 25 + 88 by rounding each number to the nearest 10: ______
- Estimate 27 + 59 by rounding each number to the nearest 10: ______
- Estimate 70 + 85 by rounding each number to the nearest 10: ______
- Estimate 64 − 56 by rounding each number to the nearest 10: ______
- Estimate 32 − 85 by rounding each number to the nearest 10: ______
- Estimate 77 + 50 by rounding each number to the nearest 10: ______