Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 31 + 85 by rounding each number to the nearest 10: ______
- Estimate 61 − 78 by rounding each number to the nearest 10: ______
- Estimate 23 + 47 by rounding each number to the nearest 10: ______
- Estimate 42 + 62 by rounding each number to the nearest 10: ______
- Estimate 84 + 42 by rounding each number to the nearest 10: ______
- Estimate 78 − 37 by rounding each number to the nearest 10: ______
- Estimate 43 + 56 by rounding each number to the nearest 10: ______
- Estimate 39 − 63 by rounding each number to the nearest 10: ______
- Estimate 79 − 39 by rounding each number to the nearest 10: ______
- Estimate 72 − 21 by rounding each number to the nearest 10: ______
- Estimate 58 − 58 by rounding each number to the nearest 10: ______
- Estimate 39 − 73 by rounding each number to the nearest 10: ______
- Estimate 70 − 36 by rounding each number to the nearest 10: ______
- Estimate 41 − 60 by rounding each number to the nearest 10: ______
- Estimate 78 − 83 by rounding each number to the nearest 10: ______
- Estimate 74 + 71 by rounding each number to the nearest 10: ______
- Estimate 32 − 68 by rounding each number to the nearest 10: ______
- Estimate 33 − 32 by rounding each number to the nearest 10: ______
- Estimate 75 + 61 by rounding each number to the nearest 10: ______
- Estimate 84 − 61 by rounding each number to the nearest 10: ______