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 308 + 111 by rounding each number to the nearest 100.
Answer: 400
- 308 rounds to 300; 111 rounds to 100
- 300 + 100 = 400
The exact answer is 419, close to the estimate.
2.Estimate 82 × 8 by rounding 82 to the nearest 10.
Answer: 640
- 82 rounds to 80
- 80 × 8 = 640
The exact answer is 656.
3.Estimate 259 + 915 by rounding each number to the nearest 100.
Answer: 1,200
- 259 rounds to 300; 915 rounds to 900
- 300 + 900 = 1,200
The exact answer is 1,174, close to the estimate.
4.Estimate 82 × 4 by rounding 82 to the nearest 10.
Answer: 320
- 82 rounds to 80
- 80 × 4 = 320
The exact answer is 328.
5.Estimate 342 + 423 by rounding each number to the nearest 100.
Answer: 700
- 342 rounds to 300; 423 rounds to 400
- 300 + 400 = 700
The exact answer is 765, close to the estimate.
6.Estimate 47 × 4 by rounding 47 to the nearest 10.
Answer: 200
- 47 rounds to 50
- 50 × 4 = 200
The exact answer is 188.
7.Estimate 561 + 537 by rounding each number to the nearest 100.
Answer: 1,100
- 561 rounds to 600; 537 rounds to 500
- 600 + 500 = 1,100
The exact answer is 1,098, close to the estimate.
8.Estimate 49 × 7 by rounding 49 to the nearest 10.
Answer: 350
- 49 rounds to 50
- 50 × 7 = 350
The exact answer is 343.
9.Estimate 121 + 743 by rounding each number to the nearest 100.
Answer: 800
- 121 rounds to 100; 743 rounds to 700
- 100 + 700 = 800
The exact answer is 864, close to the estimate.
10.Estimate 59 × 6 by rounding 59 to the nearest 10.
Answer: 360
- 59 rounds to 60
- 60 × 6 = 360
The exact answer is 354.
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.