Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 78 + 36 by rounding each number to the nearest 10: ______
- Estimate 52 + 36 by rounding each number to the nearest 10: ______
- Estimate 78 − 82 by rounding each number to the nearest 10: ______
- Estimate 79 + 62 by rounding each number to the nearest 10: ______
- Estimate 27 + 87 by rounding each number to the nearest 10: ______
- Estimate 25 + 84 by rounding each number to the nearest 10: ______
- Estimate 47 − 71 by rounding each number to the nearest 10: ______
- Estimate 64 + 26 by rounding each number to the nearest 10: ______
- Estimate 27 + 84 by rounding each number to the nearest 10: ______
- Estimate 51 + 23 by rounding each number to the nearest 10: ______
- Estimate 21 − 32 by rounding each number to the nearest 10: ______
- Estimate 45 − 51 by rounding each number to the nearest 10: ______
- Estimate 47 + 34 by rounding each number to the nearest 10: ______
- Estimate 51 + 69 by rounding each number to the nearest 10: ______
- Estimate 35 + 51 by rounding each number to the nearest 10: ______
- Estimate 30 + 63 by rounding each number to the nearest 10: ______
- Estimate 73 + 46 by rounding each number to the nearest 10: ______
- Estimate 60 − 89 by rounding each number to the nearest 10: ______
- Estimate 21 + 77 by rounding each number to the nearest 10: ______
- Estimate 81 + 39 by rounding each number to the nearest 10: ______