Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 30 − 30 by rounding each number to the nearest 10: ______
- Estimate 47 + 22 by rounding each number to the nearest 10: ______
- Estimate 59 − 62 by rounding each number to the nearest 10: ______
- Estimate 81 + 84 by rounding each number to the nearest 10: ______
- Estimate 78 − 56 by rounding each number to the nearest 10: ______
- Estimate 88 − 58 by rounding each number to the nearest 10: ______
- Estimate 81 + 47 by rounding each number to the nearest 10: ______
- Estimate 60 − 81 by rounding each number to the nearest 10: ______
- Estimate 52 + 34 by rounding each number to the nearest 10: ______
- Estimate 27 + 61 by rounding each number to the nearest 10: ______
- Estimate 83 − 73 by rounding each number to the nearest 10: ______
- Estimate 69 + 25 by rounding each number to the nearest 10: ______
- Estimate 21 − 76 by rounding each number to the nearest 10: ______
- Estimate 29 + 64 by rounding each number to the nearest 10: ______
- Estimate 68 + 72 by rounding each number to the nearest 10: ______
- Estimate 68 − 68 by rounding each number to the nearest 10: ______
- Estimate 70 − 74 by rounding each number to the nearest 10: ______
- Estimate 37 + 83 by rounding each number to the nearest 10: ______
- Estimate 63 + 38 by rounding each number to the nearest 10: ______
- Estimate 52 − 37 by rounding each number to the nearest 10: ______