Year 6 Estimating Sums, Differences and Products Worksheet — Level 1 — Practice Set 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 1 — Practice Set 2 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 14 + 91 by rounding each number to the nearest 10.
Answer: 100
- 14 rounds to 10; 91 rounds to 90
- 10 + 90 = 100
The exact answer is 105, close to the estimate.
2.Estimate 62 − 47 by rounding each number to the nearest 10.
Answer: 10
- 62 rounds to 60; 47 rounds to 50
- 60 − 50 = 10
The exact answer is 15, close to the estimate.
3.Estimate 94 + 98 by rounding each number to the nearest 10.
Answer: 190
- 94 rounds to 90; 98 rounds to 100
- 90 + 100 = 190
The exact answer is 192, close to the estimate.
4.Estimate 89 − 45 by rounding each number to the nearest 10.
Answer: 40
- 89 rounds to 90; 45 rounds to 50
- 90 − 50 = 40
The exact answer is 44, close to the estimate.
5.Estimate 68 + 62 by rounding each number to the nearest 10.
Answer: 130
- 68 rounds to 70; 62 rounds to 60
- 70 + 60 = 130
The exact answer is 130, close to the estimate.
6.Estimate 61 + 96 by rounding each number to the nearest 10.
Answer: 160
- 61 rounds to 60; 96 rounds to 100
- 60 + 100 = 160
The exact answer is 157, close to the estimate.
7.Estimate 69 + 31 by rounding each number to the nearest 10.
Answer: 100
- 69 rounds to 70; 31 rounds to 30
- 70 + 30 = 100
The exact answer is 100, close to the estimate.
8.Estimate 56 + 27 by rounding each number to the nearest 10.
Answer: 90
- 56 rounds to 60; 27 rounds to 30
- 60 + 30 = 90
The exact answer is 83, close to the estimate.
9.Estimate 51 + 82 by rounding each number to the nearest 10.
Answer: 130
- 51 rounds to 50; 82 rounds to 80
- 50 + 80 = 130
The exact answer is 133, close to the estimate.
10.Estimate 51 − 34 by rounding each number to the nearest 10.
Answer: 20
- 51 rounds to 50; 34 rounds to 30
- 50 − 30 = 20
The exact answer is 17, close to the estimate.
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.