Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 51 + 28 by rounding each number to the nearest 10: ______
- Estimate 77 − 39 by rounding each number to the nearest 10: ______
- Estimate 22 + 52 by rounding each number to the nearest 10: ______
- Estimate 52 + 27 by rounding each number to the nearest 10: ______
- Estimate 49 + 25 by rounding each number to the nearest 10: ______
- Estimate 85 − 31 by rounding each number to the nearest 10: ______
- Estimate 80 − 27 by rounding each number to the nearest 10: ______
- Estimate 36 + 64 by rounding each number to the nearest 10: ______
- Estimate 37 + 60 by rounding each number to the nearest 10: ______
- Estimate 84 + 85 by rounding each number to the nearest 10: ______
- Estimate 26 − 67 by rounding each number to the nearest 10: ______
- Estimate 36 + 75 by rounding each number to the nearest 10: ______
- Estimate 65 − 43 by rounding each number to the nearest 10: ______
- Estimate 45 − 44 by rounding each number to the nearest 10: ______
- Estimate 50 + 63 by rounding each number to the nearest 10: ______
- Estimate 71 − 76 by rounding each number to the nearest 10: ______
- Estimate 61 − 33 by rounding each number to the nearest 10: ______
- Estimate 85 + 21 by rounding each number to the nearest 10: ______
- Estimate 37 − 61 by rounding each number to the nearest 10: ______
- Estimate 23 − 40 by rounding each number to the nearest 10: ______