Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 87 + 24 by rounding each number to the nearest 10: ______
- Estimate 34 + 21 by rounding each number to the nearest 10: ______
- Estimate 40 − 73 by rounding each number to the nearest 10: ______
- Estimate 78 − 68 by rounding each number to the nearest 10: ______
- Estimate 31 + 57 by rounding each number to the nearest 10: ______
- Estimate 48 + 25 by rounding each number to the nearest 10: ______
- Estimate 73 − 67 by rounding each number to the nearest 10: ______
- Estimate 40 + 63 by rounding each number to the nearest 10: ______
- Estimate 70 + 52 by rounding each number to the nearest 10: ______
- Estimate 58 − 58 by rounding each number to the nearest 10: ______
- Estimate 89 + 56 by rounding each number to the nearest 10: ______
- Estimate 39 + 43 by rounding each number to the nearest 10: ______
- Estimate 38 − 71 by rounding each number to the nearest 10: ______
- Estimate 26 − 83 by rounding each number to the nearest 10: ______
- Estimate 21 − 78 by rounding each number to the nearest 10: ______
- Estimate 34 + 88 by rounding each number to the nearest 10: ______
- Estimate 78 − 47 by rounding each number to the nearest 10: ______
- Estimate 89 − 75 by rounding each number to the nearest 10: ______
- Estimate 21 − 82 by rounding each number to the nearest 10: ______
- Estimate 25 + 56 by rounding each number to the nearest 10: ______