Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 87 + 61 by rounding each number to the nearest 10: ______
- Estimate 38 + 24 by rounding each number to the nearest 10: ______
- Estimate 84 + 67 by rounding each number to the nearest 10: ______
- Estimate 25 + 71 by rounding each number to the nearest 10: ______
- Estimate 55 − 56 by rounding each number to the nearest 10: ______
- Estimate 81 + 23 by rounding each number to the nearest 10: ______
- Estimate 85 + 21 by rounding each number to the nearest 10: ______
- Estimate 88 − 72 by rounding each number to the nearest 10: ______
- Estimate 48 + 40 by rounding each number to the nearest 10: ______
- Estimate 31 − 70 by rounding each number to the nearest 10: ______
- Estimate 68 − 65 by rounding each number to the nearest 10: ______
- Estimate 37 + 22 by rounding each number to the nearest 10: ______
- Estimate 66 + 21 by rounding each number to the nearest 10: ______
- Estimate 72 + 38 by rounding each number to the nearest 10: ______
- Estimate 39 + 41 by rounding each number to the nearest 10: ______
- Estimate 70 − 55 by rounding each number to the nearest 10: ______
- Estimate 56 + 63 by rounding each number to the nearest 10: ______
- Estimate 59 − 69 by rounding each number to the nearest 10: ______
- Estimate 78 − 57 by rounding each number to the nearest 10: ______
- Estimate 30 + 73 by rounding each number to the nearest 10: ______