Year 6 Estimating Sums, Differences and Products Worksheet — Level 2 — 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 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 224 + 523 by rounding each number to the nearest 100.
Answer: 700
- 224 rounds to 200; 523 rounds to 500
- 200 + 500 = 700
The exact answer is 747, close to the estimate.
2.Estimate 73 × 8 by rounding 73 to the nearest 10.
Answer: 560
- 73 rounds to 70
- 70 × 8 = 560
The exact answer is 584.
3.Estimate 693 + 324 by rounding each number to the nearest 100.
Answer: 1,000
- 693 rounds to 700; 324 rounds to 300
- 700 + 300 = 1,000
The exact answer is 1,017, close to the estimate.
4.Estimate 33 × 9 by rounding 33 to the nearest 10.
Answer: 270
- 33 rounds to 30
- 30 × 9 = 270
The exact answer is 297.
5.Estimate 804 + 634 by rounding each number to the nearest 100.
Answer: 1,400
- 804 rounds to 800; 634 rounds to 600
- 800 + 600 = 1,400
The exact answer is 1,438, close to the estimate.
6.Estimate 17 × 3 by rounding 17 to the nearest 10.
Answer: 60
- 17 rounds to 20
- 20 × 3 = 60
The exact answer is 51.
7.Estimate 458 − 128 by rounding each number to the nearest 100.
Answer: 400
- 458 rounds to 500; 128 rounds to 100
- 500 − 100 = 400
The exact answer is 330, close to the estimate.
8.Estimate 57 × 5 by rounding 57 to the nearest 10.
Answer: 300
- 57 rounds to 60
- 60 × 5 = 300
The exact answer is 285.
9.Estimate 759 + 135 by rounding each number to the nearest 100.
Answer: 900
- 759 rounds to 800; 135 rounds to 100
- 800 + 100 = 900
The exact answer is 894, close to the estimate.
10.Estimate 55 × 8 by rounding 55 to the nearest 10.
Answer: 480
- 55 rounds to 60
- 60 × 8 = 480
The exact answer is 440.
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.