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 8,310 − 2,193 by rounding each number to the nearest 1,000.
Answer: 6,000
- 8,310 rounds to 8,000; 2,193 rounds to 2,000
- 8,000 − 2,000 = 6,000
The exact answer is 6,117, close to the estimate.
2.Estimate 74 × 13 by rounding each number to the nearest 10.
Answer: 700
- 74 rounds to 70; 13 rounds to 10
- 70 × 10 = 700
The exact answer is 962.
3.Estimate 16 × 5 by rounding 16 to the nearest 10.
Answer: 100
- 16 rounds to 20
- 20 × 5 = 100
The exact answer is 80.
4.Estimate 7,732 + 8,966 by rounding each number to the nearest 1,000.
Answer: 17,000
- 7,732 rounds to 8,000; 8,966 rounds to 9,000
- 8,000 + 9,000 = 17,000
The exact answer is 16,698, close to the estimate.
5.Estimate 46 × 32 by rounding each number to the nearest 10.
Answer: 1,500
- 46 rounds to 50; 32 rounds to 30
- 50 × 30 = 1,500
The exact answer is 1,472.
6.Estimate 32 × 7 by rounding 32 to the nearest 10.
Answer: 210
- 32 rounds to 30
- 30 × 7 = 210
The exact answer is 224.
7.Estimate 7,463 − 3,425 by rounding each number to the nearest 1,000.
Answer: 4,000
- 7,463 rounds to 7,000; 3,425 rounds to 3,000
- 7,000 − 3,000 = 4,000
The exact answer is 4,038, close to the estimate.
8.Estimate 52 × 27 by rounding each number to the nearest 10.
Answer: 1,500
- 52 rounds to 50; 27 rounds to 30
- 50 × 30 = 1,500
The exact answer is 1,404.
9.Estimate 85 × 48 by rounding each number to the nearest 10.
Answer: 4,500
- 85 rounds to 90; 48 rounds to 50
- 90 × 50 = 4,500
The exact answer is 4,080.
10.Estimate 4,494 + 1,726 by rounding each number to the nearest 100.
Answer: 6,200
- 4,494 rounds to 4,500; 1,726 rounds to 1,700
- 4,500 + 1,700 = 6,200
The exact answer is 6,220, close to the estimate.
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