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Estimation & Rounding (Grade 4) - Set A

Round numbers to estimate sums, differences, and products.

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Date
Math · Grade 4

Estimation & Rounding

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

  1. 1.
    Estimate 36 + 73 by rounding each to the nearest 10.
  2. 2.
    Estimate 93 + 89 by rounding each to the nearest 10.
  3. 3.
    Estimate 66 + 49 by rounding each to the nearest 10.
  4. 4.
    Estimate 94 + 77 by rounding each to the nearest 10.
  5. 5.
    Estimate 21 + 69 by rounding each to the nearest 10.
  6. 6.
    Estimate 53 + 46 by rounding each to the nearest 10.
  7. 7.
    Estimate 440 - 439 by rounding each to the nearest 100.
  8. 8.
    Estimate 640 - 308 by rounding each to the nearest 100.
  9. 9.
    Estimate 551 - 221 by rounding each to the nearest 100.
  10. 10.
    Estimate 252 - 162 by rounding each to the nearest 100.
  11. 11.
    Estimate 544 - 518 by rounding each to the nearest 100.
  12. 12.
    Estimate 83 x 36 by rounding each to the nearest 10.
  13. 13.
    Estimate 84 x 43 by rounding each to the nearest 10.
  14. 14.
    Estimate 63 x 39 by rounding each to the nearest 10.
  15. 15.
    Estimate 44 x 42 by rounding each to the nearest 10.
  16. 16.
    Estimate 12 x 79 by rounding each to the nearest 10.
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