Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 30 + 49 by rounding each number to the nearest 10: ______
- Estimate 64 + 56 by rounding each number to the nearest 10: ______
- Estimate 69 − 66 by rounding each number to the nearest 10: ______
- Estimate 33 + 70 by rounding each number to the nearest 10: ______
- Estimate 66 − 61 by rounding each number to the nearest 10: ______
- Estimate 86 − 49 by rounding each number to the nearest 10: ______
- Estimate 77 + 71 by rounding each number to the nearest 10: ______
- Estimate 55 + 32 by rounding each number to the nearest 10: ______
- Estimate 89 + 53 by rounding each number to the nearest 10: ______
- Estimate 43 − 62 by rounding each number to the nearest 10: ______
- Estimate 36 + 78 by rounding each number to the nearest 10: ______
- Estimate 65 − 63 by rounding each number to the nearest 10: ______
- Estimate 64 − 60 by rounding each number to the nearest 10: ______
- Estimate 40 − 48 by rounding each number to the nearest 10: ______
- Estimate 21 − 77 by rounding each number to the nearest 10: ______
- Estimate 39 − 57 by rounding each number to the nearest 10: ______
- Estimate 42 − 54 by rounding each number to the nearest 10: ______
- Estimate 80 + 75 by rounding each number to the nearest 10: ______
- Estimate 65 + 22 by rounding each number to the nearest 10: ______
- Estimate 51 − 56 by rounding each number to the nearest 10: ______