Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 59 + 21 by rounding each number to the nearest 10: ______
- Estimate 26 + 66 by rounding each number to the nearest 10: ______
- Estimate 24 + 77 by rounding each number to the nearest 10: ______
- Estimate 81 − 57 by rounding each number to the nearest 10: ______
- Estimate 65 − 38 by rounding each number to the nearest 10: ______
- Estimate 34 − 74 by rounding each number to the nearest 10: ______
- Estimate 65 − 86 by rounding each number to the nearest 10: ______
- Estimate 42 + 55 by rounding each number to the nearest 10: ______
- Estimate 87 − 44 by rounding each number to the nearest 10: ______
- Estimate 34 + 59 by rounding each number to the nearest 10: ______
- Estimate 88 + 45 by rounding each number to the nearest 10: ______
- Estimate 61 − 58 by rounding each number to the nearest 10: ______
- Estimate 47 + 43 by rounding each number to the nearest 10: ______
- Estimate 42 + 25 by rounding each number to the nearest 10: ______
- Estimate 26 + 89 by rounding each number to the nearest 10: ______
- Estimate 49 − 44 by rounding each number to the nearest 10: ______
- Estimate 21 − 83 by rounding each number to the nearest 10: ______
- Estimate 60 + 34 by rounding each number to the nearest 10: ______
- Estimate 64 − 75 by rounding each number to the nearest 10: ______
- Estimate 21 + 51 by rounding each number to the nearest 10: ______