6th Grade Estimating Sums, Differences and Products Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 6th Grade place value worksheet.
Success TutoringWorksheetsAnswer sheet6th Grade · Mathematics · Place Value6th Grade Estimating Sums, Differences and Products Worksheet — Level 3 — Practice Set 4 — Answers
Round each number first, then work out the estimate in your head.
1.Estimate 9,850 + 7,394 by rounding each number to the nearest 1,000.
Answer: 17,000
- 9,850 rounds to 10,000; 7,394 rounds to 7,000
- 10,000 + 7,000 = 17,000
The exact answer is 17,244, close to the estimate.
2.Estimate 83 × 54 by rounding each number to the nearest 10.
Answer: 4,000
- 83 rounds to 80; 54 rounds to 50
- 80 × 50 = 4,000
The exact answer is 4,482.
3.Estimate 24 × 74 by rounding each number to the nearest 10.
Answer: 1,400
- 24 rounds to 20; 74 rounds to 70
- 20 × 70 = 1,400
The exact answer is 1,776.
4.Estimate 6,112 + 7,246 by rounding each number to the nearest 1,000.
Answer: 13,000
- 6,112 rounds to 6,000; 7,246 rounds to 7,000
- 6,000 + 7,000 = 13,000
The exact answer is 13,358, close to the estimate.
5.Estimate 76 × 98 by rounding each number to the nearest 10.
Answer: 8,000
- 76 rounds to 80; 98 rounds to 100
- 80 × 100 = 8,000
The exact answer is 7,448.
6.Estimate 51 × 5 by rounding 51 to the nearest 10.
Answer: 250
- 51 rounds to 50
- 50 × 5 = 250
The exact answer is 255.
7.Estimate 6,288 + 7,459 by rounding each number to the nearest 1,000.
Answer: 13,000
- 6,288 rounds to 6,000; 7,459 rounds to 7,000
- 6,000 + 7,000 = 13,000
The exact answer is 13,747, close to the estimate.
8.Estimate 95 × 85 by rounding each number to the nearest 10.
Answer: 9,000
- 95 rounds to 100; 85 rounds to 90
- 100 × 90 = 9,000
The exact answer is 8,075.
9.Estimate 89 × 55 by rounding each number to the nearest 10.
Answer: 5,400
- 89 rounds to 90; 55 rounds to 60
- 90 × 60 = 5,400
The exact answer is 4,895.
10.Estimate 7,525 + 9,723 by rounding each number to the nearest 1,000.
Answer: 18,000
- 7,525 rounds to 8,000; 9,723 rounds to 10,000
- 8,000 + 10,000 = 18,000
The exact answer is 17,248, 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.