Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 21 + 70 by rounding each number to the nearest 10: ______
- Estimate 42 + 63 by rounding each number to the nearest 10: ______
- Estimate 33 − 74 by rounding each number to the nearest 10: ______
- Estimate 23 + 59 by rounding each number to the nearest 10: ______
- Estimate 67 − 66 by rounding each number to the nearest 10: ______
- Estimate 70 − 57 by rounding each number to the nearest 10: ______
- Estimate 56 − 79 by rounding each number to the nearest 10: ______
- Estimate 60 − 65 by rounding each number to the nearest 10: ______
- Estimate 59 − 38 by rounding each number to the nearest 10: ______
- Estimate 84 − 85 by rounding each number to the nearest 10: ______
- Estimate 24 + 87 by rounding each number to the nearest 10: ______
- Estimate 72 + 39 by rounding each number to the nearest 10: ______
- Estimate 84 + 84 by rounding each number to the nearest 10: ______
- Estimate 65 − 85 by rounding each number to the nearest 10: ______
- Estimate 46 + 34 by rounding each number to the nearest 10: ______
- Estimate 29 + 83 by rounding each number to the nearest 10: ______
- Estimate 89 + 82 by rounding each number to the nearest 10: ______
- Estimate 79 − 77 by rounding each number to the nearest 10: ______
- Estimate 29 + 44 by rounding each number to the nearest 10: ______
- Estimate 87 + 55 by rounding each number to the nearest 10: ______