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Rounding for Estimation Practice

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Rounding for Estimation Practice

Round each number to the place value named. For estimates, round first, then calculate. Show your thinking where space is provided.

Round numbers

Practise rounding to the nearest 10, 100 and 1,000.

1.Round 572 to the nearest 10.
2.Round 3,746 to the nearest 100.
3.Round 28,561 to the nearest 1,000.
4.Which is 6,482 rounded to the nearest 100?
  • 6,400
  • 6,480
  • 6,500
  • 6,000
5.The number line shows a number between 3,000 and 4,000. Round 3,438 to the nearest 1,000.
30003250350037504000
6.Match each number to its value when rounded to the nearest 100. Write the matching letter beside each number.
  • A. 2,349
  • B. 5,851
  • C. 7,650
  • D. 4,044
  • E. 9,276
  • 5,900
  • 7,700
  • 9,300
  • 2,300
  • 4,000

Estimate calculations

Round the numbers to a suitable place value, then use them to estimate.

7.Estimate 368 + 247 by rounding each number to the nearest 100. Give your rounded numbers and estimated total.
8.A community group orders 736 reusable drink bottles at $9 each. Estimate the total cost by rounding 736 to the nearest 100, then multiplying by $9.
9.Estimate 6,482 − 2,735 by rounding both numbers to the nearest 1,000.
10.A fruit shop sold 584 apples and 327 pears in one day. Estimate the total number of pieces of fruit by rounding each amount to the nearest 100.
11.Which is the closest estimate for 8,263 + 3,641 when each number is rounded to the nearest 1,000?
  • 10,000
  • 11,000
  • 12,000
  • 13,000
12.Kai estimates 486 + 329 by rounding to the nearest 10. What estimate does Kai get, and is it reasonable? Explain briefly.
13.Round 4,682 to the nearest 1,000 and 4,682 to the nearest 100. Which rounded value would usually give the more precise estimate, and why?

3 printable pages

  • Rounding whole numbers to the nearest 10, 100 and 1,000, including a number line and matching activity.

    Page 1

  • Estimating addition, subtraction and multiplication with rounded numbers in Australian contexts.

    Page 2

  • Explaining whether estimates are reasonable and checking estimates against exact calculations.

    Page 3

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