Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 28 − 79 by rounding each number to the nearest 10: ______
- Estimate 77 − 36 by rounding each number to the nearest 10: ______
- Estimate 66 + 81 by rounding each number to the nearest 10: ______
- Estimate 39 + 43 by rounding each number to the nearest 10: ______
- Estimate 51 − 46 by rounding each number to the nearest 10: ______
- Estimate 49 + 77 by rounding each number to the nearest 10: ______
- Estimate 71 + 43 by rounding each number to the nearest 10: ______
- Estimate 86 + 38 by rounding each number to the nearest 10: ______
- Estimate 35 − 46 by rounding each number to the nearest 10: ______
- Estimate 28 − 81 by rounding each number to the nearest 10: ______
- Estimate 45 + 38 by rounding each number to the nearest 10: ______
- Estimate 89 − 23 by rounding each number to the nearest 10: ______
- Estimate 61 + 24 by rounding each number to the nearest 10: ______
- Estimate 21 − 60 by rounding each number to the nearest 10: ______
- Estimate 33 − 43 by rounding each number to the nearest 10: ______
- Estimate 60 + 41 by rounding each number to the nearest 10: ______
- Estimate 87 + 24 by rounding each number to the nearest 10: ______
- Estimate 55 + 77 by rounding each number to the nearest 10: ______
- Estimate 79 + 83 by rounding each number to the nearest 10: ______
- Estimate 89 − 41 by rounding each number to the nearest 10: ______