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 95 + 18 by rounding each number to the nearest 10.
Answer: 120
- 95 rounds to 100; 18 rounds to 20
- 100 + 20 = 120
The exact answer is 113, close to the estimate.
2.Estimate 89 − 41 by rounding each number to the nearest 10.
Answer: 50
- 89 rounds to 90; 41 rounds to 40
- 90 − 40 = 50
The exact answer is 48, close to the estimate.
3.Estimate 56 − 53 by rounding each number to the nearest 10.
Answer: 10
- 56 rounds to 60; 53 rounds to 50
- 60 − 50 = 10
The exact answer is 3, close to the estimate.
4.Estimate 97 − 54 by rounding each number to the nearest 10.
Answer: 50
- 97 rounds to 100; 54 rounds to 50
- 100 − 50 = 50
The exact answer is 43, close to the estimate.
5.Estimate 47 − 39 by rounding each number to the nearest 10.
Answer: 10
- 47 rounds to 50; 39 rounds to 40
- 50 − 40 = 10
The exact answer is 8, close to the estimate.
6.Estimate 98 − 17 by rounding each number to the nearest 10.
Answer: 80
- 98 rounds to 100; 17 rounds to 20
- 100 − 20 = 80
The exact answer is 81, close to the estimate.
7.Estimate 56 + 87 by rounding each number to the nearest 10.
Answer: 150
- 56 rounds to 60; 87 rounds to 90
- 60 + 90 = 150
The exact answer is 143, close to the estimate.
8.Estimate 64 + 94 by rounding each number to the nearest 10.
Answer: 150
- 64 rounds to 60; 94 rounds to 90
- 60 + 90 = 150
The exact answer is 158, close to the estimate.
9.Estimate 66 − 56 by rounding each number to the nearest 10.
Answer: 10
- 66 rounds to 70; 56 rounds to 60
- 70 − 60 = 10
The exact answer is 10, close to the estimate.
10.Estimate 92 + 59 by rounding each number to the nearest 10.
Answer: 150
- 92 rounds to 90; 59 rounds to 60
- 90 + 60 = 150
The exact answer is 151, 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.