Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 57 − 83 by rounding each number to the nearest 10: ______
- Estimate 51 − 28 by rounding each number to the nearest 10: ______
- Estimate 30 + 87 by rounding each number to the nearest 10: ______
- Estimate 47 + 34 by rounding each number to the nearest 10: ______
- Estimate 30 + 55 by rounding each number to the nearest 10: ______
- Estimate 50 + 81 by rounding each number to the nearest 10: ______
- Estimate 80 − 60 by rounding each number to the nearest 10: ______
- Estimate 23 + 21 by rounding each number to the nearest 10: ______
- Estimate 48 − 83 by rounding each number to the nearest 10: ______
- Estimate 27 − 27 by rounding each number to the nearest 10: ______
- Estimate 21 + 71 by rounding each number to the nearest 10: ______
- Estimate 40 + 48 by rounding each number to the nearest 10: ______
- Estimate 30 + 67 by rounding each number to the nearest 10: ______
- Estimate 57 − 72 by rounding each number to the nearest 10: ______
- Estimate 75 − 65 by rounding each number to the nearest 10: ______
- Estimate 77 − 37 by rounding each number to the nearest 10: ______
- Estimate 35 − 58 by rounding each number to the nearest 10: ______
- Estimate 53 − 74 by rounding each number to the nearest 10: ______
- Estimate 24 − 79 by rounding each number to the nearest 10: ______
- Estimate 54 + 46 by rounding each number to the nearest 10: ______