Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 87 − 51 by rounding each number to the nearest 10: ______
- Estimate 81 + 44 by rounding each number to the nearest 10: ______
- Estimate 63 − 63 by rounding each number to the nearest 10: ______
- Estimate 39 + 57 by rounding each number to the nearest 10: ______
- Estimate 39 − 62 by rounding each number to the nearest 10: ______
- Estimate 73 + 70 by rounding each number to the nearest 10: ______
- Estimate 66 − 56 by rounding each number to the nearest 10: ______
- Estimate 22 + 25 by rounding each number to the nearest 10: ______
- Estimate 79 − 86 by rounding each number to the nearest 10: ______
- Estimate 57 + 84 by rounding each number to the nearest 10: ______
- Estimate 87 − 70 by rounding each number to the nearest 10: ______
- Estimate 84 + 75 by rounding each number to the nearest 10: ______
- Estimate 75 + 54 by rounding each number to the nearest 10: ______
- Estimate 43 − 22 by rounding each number to the nearest 10: ______
- Estimate 68 + 68 by rounding each number to the nearest 10: ______
- Estimate 21 − 43 by rounding each number to the nearest 10: ______
- Estimate 73 + 52 by rounding each number to the nearest 10: ______
- Estimate 64 − 55 by rounding each number to the nearest 10: ______
- Estimate 59 + 22 by rounding each number to the nearest 10: ______
- Estimate 49 + 38 by rounding each number to the nearest 10: ______