5th Grade Estimating Sums, Differences and Products Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 5th Grade place value worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Place Value5th Grade Estimating Sums, Differences and Products Worksheet — Level 2 — Practice Set 4 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 752 − 284 by rounding each number to the nearest 100.
Answer: 500
- 752 rounds to 800; 284 rounds to 300
- 800 − 300 = 500
The exact answer is 468, close to the estimate.
2.Estimate 71 × 6 by rounding 71 to the nearest 10.
Answer: 420
- 71 rounds to 70
- 70 × 6 = 420
The exact answer is 426.
3.Estimate 528 − 447 by rounding each number to the nearest 100.
Answer: 100
- 528 rounds to 500; 447 rounds to 400
- 500 − 400 = 100
The exact answer is 81, close to the estimate.
4.Estimate 82 × 6 by rounding 82 to the nearest 10.
Answer: 480
- 82 rounds to 80
- 80 × 6 = 480
The exact answer is 492.
5.Estimate 915 + 716 by rounding each number to the nearest 100.
Answer: 1,600
- 915 rounds to 900; 716 rounds to 700
- 900 + 700 = 1,600
The exact answer is 1,631, close to the estimate.
6.Estimate 32 × 7 by rounding 32 to the nearest 10.
Answer: 210
- 32 rounds to 30
- 30 × 7 = 210
The exact answer is 224.
7.Estimate 355 + 226 by rounding each number to the nearest 100.
Answer: 600
- 355 rounds to 400; 226 rounds to 200
- 400 + 200 = 600
The exact answer is 581, close to the estimate.
8.Estimate 92 × 6 by rounding 92 to the nearest 10.
Answer: 540
- 92 rounds to 90
- 90 × 6 = 540
The exact answer is 552.
9.Estimate 888 − 615 by rounding each number to the nearest 100.
Answer: 300
- 888 rounds to 900; 615 rounds to 600
- 900 − 600 = 300
The exact answer is 273, close to the estimate.
10.Estimate 35 × 3 by rounding 35 to the nearest 10.
Answer: 120
- 35 rounds to 40
- 40 × 3 = 120
The exact answer is 105.
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.