Year 6 Estimating Sums, Differences and Products Worksheet — Level 3 — 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 3 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 2,582 + 2,458 by rounding each number to the nearest 100.
Answer: 5,100
- 2,582 rounds to 2,600; 2,458 rounds to 2,500
- 2,600 + 2,500 = 5,100
The exact answer is 5,040, close to the estimate.
2.Estimate 92 × 31 by rounding each number to the nearest 10.
Answer: 2,700
- 92 rounds to 90; 31 rounds to 30
- 90 × 30 = 2,700
The exact answer is 2,852.
3.Estimate 49 × 4 by rounding 49 to the nearest 10.
Answer: 200
- 49 rounds to 50
- 50 × 4 = 200
The exact answer is 196.
4.Estimate 2,976 + 5,202 by rounding each number to the nearest 100.
Answer: 8,200
- 2,976 rounds to 3,000; 5,202 rounds to 5,200
- 3,000 + 5,200 = 8,200
The exact answer is 8,178, close to the estimate.
5.Estimate 12 × 95 by rounding each number to the nearest 10.
Answer: 1,000
- 12 rounds to 10; 95 rounds to 100
- 10 × 100 = 1,000
The exact answer is 1,140.
6.Estimate 73 × 67 by rounding each number to the nearest 10.
Answer: 4,900
- 73 rounds to 70; 67 rounds to 70
- 70 × 70 = 4,900
The exact answer is 4,891.
7.Estimate 5,147 + 2,243 by rounding each number to the nearest 100.
Answer: 7,300
- 5,147 rounds to 5,100; 2,243 rounds to 2,200
- 5,100 + 2,200 = 7,300
The exact answer is 7,390, close to the estimate.
8.Estimate 17 × 43 by rounding each number to the nearest 10.
Answer: 800
- 17 rounds to 20; 43 rounds to 40
- 20 × 40 = 800
The exact answer is 731.
9.Estimate 36 × 52 by rounding each number to the nearest 10.
Answer: 2,000
- 36 rounds to 40; 52 rounds to 50
- 40 × 50 = 2,000
The exact answer is 1,872.
10.Estimate 1,439 + 3,850 by rounding each number to the nearest 1,000.
Answer: 5,000
- 1,439 rounds to 1,000; 3,850 rounds to 4,000
- 1,000 + 4,000 = 5,000
The exact answer is 5,289, close to the estimate.
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