Year 6 Estimating Sums, Differences and Products Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 6 place value worksheet.
Success TutoringWorksheetsAnswer sheetYear 6 · Mathematics · Place ValueYear 6 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 527 + 917 by rounding each number to the nearest 100.
Answer: 1,400
- 527 rounds to 500; 917 rounds to 900
- 500 + 900 = 1,400
The exact answer is 1,444, close to the estimate.
2.Estimate 82 × 6 by rounding 82 to the nearest 10.
Answer: 480
- 82 rounds to 80
- 80 × 6 = 480
The exact answer is 492.
3.Estimate 767 − 205 by rounding each number to the nearest 100.
Answer: 600
- 767 rounds to 800; 205 rounds to 200
- 800 − 200 = 600
The exact answer is 562, close to the estimate.
4.Estimate 57 × 7 by rounding 57 to the nearest 10.
Answer: 420
- 57 rounds to 60
- 60 × 7 = 420
The exact answer is 399.
5.Estimate 529 + 369 by rounding each number to the nearest 100.
Answer: 900
- 529 rounds to 500; 369 rounds to 400
- 500 + 400 = 900
The exact answer is 898, close to the estimate.
6.Estimate 61 × 5 by rounding 61 to the nearest 10.
Answer: 300
- 61 rounds to 60
- 60 × 5 = 300
The exact answer is 305.
7.Estimate 707 − 587 by rounding each number to the nearest 100.
Answer: 100
- 707 rounds to 700; 587 rounds to 600
- 700 − 600 = 100
The exact answer is 120, close to the estimate.
8.Estimate 28 × 3 by rounding 28 to the nearest 10.
Answer: 90
- 28 rounds to 30
- 30 × 3 = 90
The exact answer is 84.
9.Estimate 833 + 313 by rounding each number to the nearest 100.
Answer: 1,100
- 833 rounds to 800; 313 rounds to 300
- 800 + 300 = 1,100
The exact answer is 1,146, close to the estimate.
10.Estimate 32 × 6 by rounding 32 to the nearest 10.
Answer: 180
- 32 rounds to 30
- 30 × 6 = 180
The exact answer is 192.
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.