Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 40 + 41 by rounding each number to the nearest 10: ______
- Estimate 71 + 21 by rounding each number to the nearest 10: ______
- Estimate 83 − 68 by rounding each number to the nearest 10: ______
- Estimate 26 − 52 by rounding each number to the nearest 10: ______
- Estimate 86 − 74 by rounding each number to the nearest 10: ______
- Estimate 42 − 28 by rounding each number to the nearest 10: ______
- Estimate 81 − 65 by rounding each number to the nearest 10: ______
- Estimate 60 + 80 by rounding each number to the nearest 10: ______
- Estimate 25 + 76 by rounding each number to the nearest 10: ______
- Estimate 73 + 23 by rounding each number to the nearest 10: ______
- Estimate 21 + 65 by rounding each number to the nearest 10: ______
- Estimate 83 + 86 by rounding each number to the nearest 10: ______
- Estimate 53 + 58 by rounding each number to the nearest 10: ______
- Estimate 72 + 72 by rounding each number to the nearest 10: ______
- Estimate 44 − 82 by rounding each number to the nearest 10: ______
- Estimate 45 − 56 by rounding each number to the nearest 10: ______
- Estimate 38 − 67 by rounding each number to the nearest 10: ______
- Estimate 77 − 53 by rounding each number to the nearest 10: ______
- Estimate 49 − 85 by rounding each number to the nearest 10: ______
- Estimate 50 + 34 by rounding each number to the nearest 10: ______