Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 51 − 39 by rounding each number to the nearest 10: ______
- Estimate 76 + 49 by rounding each number to the nearest 10: ______
- Estimate 27 − 66 by rounding each number to the nearest 10: ______
- Estimate 79 − 75 by rounding each number to the nearest 10: ______
- Estimate 80 + 49 by rounding each number to the nearest 10: ______
- Estimate 42 + 22 by rounding each number to the nearest 10: ______
- Estimate 35 − 46 by rounding each number to the nearest 10: ______
- Estimate 85 + 40 by rounding each number to the nearest 10: ______
- Estimate 31 − 81 by rounding each number to the nearest 10: ______
- Estimate 73 + 75 by rounding each number to the nearest 10: ______
- Estimate 84 − 34 by rounding each number to the nearest 10: ______
- Estimate 83 − 28 by rounding each number to the nearest 10: ______
- Estimate 51 − 57 by rounding each number to the nearest 10: ______
- Estimate 62 + 21 by rounding each number to the nearest 10: ______
- Estimate 47 + 88 by rounding each number to the nearest 10: ______
- Estimate 63 − 25 by rounding each number to the nearest 10: ______
- Estimate 58 + 85 by rounding each number to the nearest 10: ______
- Estimate 89 − 27 by rounding each number to the nearest 10: ______
- Estimate 56 − 51 by rounding each number to the nearest 10: ______
- Estimate 34 + 60 by rounding each number to the nearest 10: ______