Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 25 + 78 by rounding each number to the nearest 10: ______
- Estimate 49 + 67 by rounding each number to the nearest 10: ______
- Estimate 55 + 72 by rounding each number to the nearest 10: ______
- Estimate 76 + 38 by rounding each number to the nearest 10: ______
- Estimate 29 − 27 by rounding each number to the nearest 10: ______
- Estimate 68 + 78 by rounding each number to the nearest 10: ______
- Estimate 82 + 30 by rounding each number to the nearest 10: ______
- Estimate 62 − 48 by rounding each number to the nearest 10: ______
- Estimate 21 + 76 by rounding each number to the nearest 10: ______
- Estimate 39 + 42 by rounding each number to the nearest 10: ______
- Estimate 53 − 82 by rounding each number to the nearest 10: ______
- Estimate 56 − 32 by rounding each number to the nearest 10: ______
- Estimate 55 − 37 by rounding each number to the nearest 10: ______
- Estimate 77 + 83 by rounding each number to the nearest 10: ______
- Estimate 77 − 73 by rounding each number to the nearest 10: ______
- Estimate 31 + 34 by rounding each number to the nearest 10: ______
- Estimate 86 + 33 by rounding each number to the nearest 10: ______
- Estimate 37 − 66 by rounding each number to the nearest 10: ______
- Estimate 25 + 30 by rounding each number to the nearest 10: ______
- Estimate 27 + 75 by rounding each number to the nearest 10: ______