Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 42 + 88 by rounding each number to the nearest 10: ______
- Estimate 81 + 79 by rounding each number to the nearest 10: ______
- Estimate 65 − 73 by rounding each number to the nearest 10: ______
- Estimate 86 + 63 by rounding each number to the nearest 10: ______
- Estimate 66 − 48 by rounding each number to the nearest 10: ______
- Estimate 48 + 38 by rounding each number to the nearest 10: ______
- Estimate 60 + 21 by rounding each number to the nearest 10: ______
- Estimate 55 + 76 by rounding each number to the nearest 10: ______
- Estimate 31 − 48 by rounding each number to the nearest 10: ______
- Estimate 77 + 58 by rounding each number to the nearest 10: ______
- Estimate 41 − 72 by rounding each number to the nearest 10: ______
- Estimate 82 − 85 by rounding each number to the nearest 10: ______
- Estimate 80 − 51 by rounding each number to the nearest 10: ______
- Estimate 41 + 47 by rounding each number to the nearest 10: ______
- Estimate 40 + 42 by rounding each number to the nearest 10: ______
- Estimate 55 − 41 by rounding each number to the nearest 10: ______
- Estimate 55 + 21 by rounding each number to the nearest 10: ______
- Estimate 73 + 83 by rounding each number to the nearest 10: ______
- Estimate 29 − 61 by rounding each number to the nearest 10: ______
- Estimate 44 − 60 by rounding each number to the nearest 10: ______