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Estimation & Rounding (Grade 5) - Set B

Round numbers to estimate sums, differences, and products.

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Date
Math · Grade 5

Estimation & Rounding

Round each number first, then estimate the sum, difference, or product.

  1. 1.
    Estimate 79 + 24 by rounding each to the nearest 10.
  2. 2.
    Estimate 85 + 90 by rounding each to the nearest 10.
  3. 3.
    Estimate 47 + 24 by rounding each to the nearest 10.
  4. 4.
    Estimate 48 + 86 by rounding each to the nearest 10.
  5. 5.
    Estimate 44 + 15 by rounding each to the nearest 10.
  6. 6.
    Estimate 22 + 18 by rounding each to the nearest 10.
  7. 7.
    Estimate 917 - 509 by rounding each to the nearest 100.
  8. 8.
    Estimate 338 - 225 by rounding each to the nearest 100.
  9. 9.
    Estimate 887 - 331 by rounding each to the nearest 100.
  10. 10.
    Estimate 807 - 143 by rounding each to the nearest 100.
  11. 11.
    Estimate 506 - 208 by rounding each to the nearest 100.
  12. 12.
    Estimate 65 x 64 by rounding each to the nearest 10.
  13. 13.
    Estimate 70 x 69 by rounding each to the nearest 10.
  14. 14.
    Estimate 28 x 27 by rounding each to the nearest 10.
  15. 15.
    Estimate 20 x 20 by rounding each to the nearest 10.
  16. 16.
    Estimate 82 x 17 by rounding each to the nearest 10.
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