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20 questions and an answer page, sized for A4.

Estimate sums and differences

Year 3 · Addition · 20 questions

Name
Date
  1. 1.
    Estimate 129 + 533 by rounding each number to the nearest hundred.
  2. 2.
    Estimate 107 + 427 by rounding each number to the nearest hundred.
  3. 3.
    Estimate 130 + 907 by rounding each number to the nearest hundred.
  4. 4.
    Estimate 965 − 922 by rounding each number to the nearest hundred.
  5. 5.
    Estimate 972 + 405 by rounding each number to the nearest hundred.
  6. 6.
    Estimate 193 + 982 by rounding each number to the nearest hundred.
  7. 7.
    Estimate 915 + 351 by rounding each number to the nearest hundred.
  8. 8.
    Estimate 599 + 866 by rounding each number to the nearest hundred.
  9. 9.
    Estimate 925 + 370 by rounding each number to the nearest hundred.
  10. 10.
    Estimate 964 + 428 by rounding each number to the nearest hundred.
  11. 11.
    Estimate 736 + 413 by rounding each number to the nearest hundred.
  12. 12.
    Estimate 499 − 218 by rounding each number to the nearest hundred.
  13. 13.
    Estimate 721 − 366 by rounding each number to the nearest hundred.
  14. 14.
    Estimate 853 + 338 by rounding each number to the nearest hundred.
  15. 15.
    Estimate 886 − 748 by rounding each number to the nearest hundred.
  16. 16.
    Estimate 111 + 162 by rounding each number to the nearest hundred.
  17. 17.
    Estimate 814 − 215 by rounding each number to the nearest hundred.
  18. 18.
    Estimate 785 − 760 by rounding each number to the nearest hundred.
  19. 19.
    Estimate 549 + 858 by rounding each number to the nearest hundred.
  20. 20.
    Estimate 503 + 569 by rounding each number to the nearest hundred.

Free maths worksheets and practice: rocketdigits.com/learn/estimate-sums-and-differences

Answers: Estimate sums and differences

  1. 600
  2. 500
  3. 1000
  4. 100
  5. 1400
  6. 1200
  7. 1300
  8. 1500
  9. 1300
  10. 1400
  11. 1100
  12. 300
  13. 300
  14. 1200
  15. 200
  16. 300
  17. 600
  18. 0
  19. 1400
  20. 1100

Free maths worksheets and practice: rocketdigits.com/learn/estimate-sums-and-differences

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