Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 68 − 81 by rounding each number to the nearest 10: ______
- Estimate 38 + 88 by rounding each number to the nearest 10: ______
- Estimate 46 + 86 by rounding each number to the nearest 10: ______
- Estimate 82 + 42 by rounding each number to the nearest 10: ______
- Estimate 71 − 22 by rounding each number to the nearest 10: ______
- Estimate 66 + 58 by rounding each number to the nearest 10: ______
- Estimate 85 − 28 by rounding each number to the nearest 10: ______
- Estimate 31 + 59 by rounding each number to the nearest 10: ______
- Estimate 45 + 87 by rounding each number to the nearest 10: ______
- Estimate 48 − 53 by rounding each number to the nearest 10: ______
- Estimate 85 − 21 by rounding each number to the nearest 10: ______
- Estimate 56 + 54 by rounding each number to the nearest 10: ______
- Estimate 47 − 31 by rounding each number to the nearest 10: ______
- Estimate 87 − 76 by rounding each number to the nearest 10: ______
- Estimate 43 + 67 by rounding each number to the nearest 10: ______
- Estimate 26 − 79 by rounding each number to the nearest 10: ______
- Estimate 44 − 78 by rounding each number to the nearest 10: ______
- Estimate 75 − 25 by rounding each number to the nearest 10: ______
- Estimate 24 + 73 by rounding each number to the nearest 10: ______
- Estimate 84 − 23 by rounding each number to the nearest 10: ______