Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 23 − 61 by rounding each number to the nearest 10: ______
- Estimate 40 + 39 by rounding each number to the nearest 10: ______
- Estimate 21 − 46 by rounding each number to the nearest 10: ______
- Estimate 31 + 28 by rounding each number to the nearest 10: ______
- Estimate 74 − 75 by rounding each number to the nearest 10: ______
- Estimate 71 − 35 by rounding each number to the nearest 10: ______
- Estimate 50 + 27 by rounding each number to the nearest 10: ______
- Estimate 22 + 24 by rounding each number to the nearest 10: ______
- Estimate 61 + 70 by rounding each number to the nearest 10: ______
- Estimate 78 + 42 by rounding each number to the nearest 10: ______
- Estimate 66 + 76 by rounding each number to the nearest 10: ______
- Estimate 63 + 63 by rounding each number to the nearest 10: ______
- Estimate 71 − 77 by rounding each number to the nearest 10: ______
- Estimate 88 − 54 by rounding each number to the nearest 10: ______
- Estimate 79 − 79 by rounding each number to the nearest 10: ______
- Estimate 62 − 28 by rounding each number to the nearest 10: ______
- Estimate 21 + 58 by rounding each number to the nearest 10: ______
- Estimate 31 − 75 by rounding each number to the nearest 10: ______
- Estimate 74 + 78 by rounding each number to the nearest 10: ______
- Estimate 48 + 22 by rounding each number to the nearest 10: ______