Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 33 − 39 by rounding each number to the nearest 10: ______
- Estimate 34 − 39 by rounding each number to the nearest 10: ______
- Estimate 45 + 75 by rounding each number to the nearest 10: ______
- Estimate 45 + 55 by rounding each number to the nearest 10: ______
- Estimate 60 + 46 by rounding each number to the nearest 10: ______
- Estimate 29 + 57 by rounding each number to the nearest 10: ______
- Estimate 47 + 86 by rounding each number to the nearest 10: ______
- Estimate 79 − 87 by rounding each number to the nearest 10: ______
- Estimate 64 + 77 by rounding each number to the nearest 10: ______
- Estimate 68 + 51 by rounding each number to the nearest 10: ______
- Estimate 25 − 54 by rounding each number to the nearest 10: ______
- Estimate 40 + 83 by rounding each number to the nearest 10: ______
- Estimate 23 + 49 by rounding each number to the nearest 10: ______
- Estimate 67 − 38 by rounding each number to the nearest 10: ______
- Estimate 58 − 44 by rounding each number to the nearest 10: ______
- Estimate 56 + 41 by rounding each number to the nearest 10: ______
- Estimate 88 + 44 by rounding each number to the nearest 10: ______
- Estimate 30 − 81 by rounding each number to the nearest 10: ______
- Estimate 24 + 77 by rounding each number to the nearest 10: ______
- Estimate 30 + 67 by rounding each number to the nearest 10: ______