Year 6 Estimating Sums, Differences and Products Worksheet — Level 3 — 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 3 — Practice Set 2 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 4,473 − 3,801 by rounding each number to the nearest 100.
Answer: 700
- 4,473 rounds to 4,500; 3,801 rounds to 3,800
- 4,500 − 3,800 = 700
The exact answer is 672, close to the estimate.
2.Estimate 74 × 58 by rounding each number to the nearest 10.
Answer: 4,200
- 74 rounds to 70; 58 rounds to 60
- 70 × 60 = 4,200
The exact answer is 4,292.
3.Estimate 41 × 8 by rounding 41 to the nearest 10.
Answer: 320
- 41 rounds to 40
- 40 × 8 = 320
The exact answer is 328.
4.Estimate 7,250 − 6,125 by rounding each number to the nearest 100.
Answer: 1,200
- 7,250 rounds to 7,300; 6,125 rounds to 6,100
- 7,300 − 6,100 = 1,200
The exact answer is 1,125, close to the estimate.
5.Estimate 47 × 95 by rounding each number to the nearest 10.
Answer: 5,000
- 47 rounds to 50; 95 rounds to 100
- 50 × 100 = 5,000
The exact answer is 4,465.
6.Estimate 29 × 65 by rounding each number to the nearest 10.
Answer: 2,100
- 29 rounds to 30; 65 rounds to 70
- 30 × 70 = 2,100
The exact answer is 1,885.
7.Estimate 8,222 + 5,748 by rounding each number to the nearest 100.
Answer: 13,900
- 8,222 rounds to 8,200; 5,748 rounds to 5,700
- 8,200 + 5,700 = 13,900
The exact answer is 13,970, close to the estimate.
8.Estimate 24 × 68 by rounding each number to the nearest 10.
Answer: 1,400
- 24 rounds to 20; 68 rounds to 70
- 20 × 70 = 1,400
The exact answer is 1,632.
9.Estimate 66 × 92 by rounding each number to the nearest 10.
Answer: 6,300
- 66 rounds to 70; 92 rounds to 90
- 70 × 90 = 6,300
The exact answer is 6,072.
10.Estimate 2,382 + 3,605 by rounding each number to the nearest 100.
Answer: 6,000
- 2,382 rounds to 2,400; 3,605 rounds to 3,600
- 2,400 + 3,600 = 6,000
The exact answer is 5,987, close to the estimate.
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