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Estimation & Rounding (Grade 4) - Set B

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 79 + 80 by rounding each to the nearest 10.
  2. 2.
    Estimate 45 + 77 by rounding each to the nearest 10.
  3. 3.
    Estimate 56 + 76 by rounding each to the nearest 10.
  4. 4.
    Estimate 75 + 16 by rounding each to the nearest 10.
  5. 5.
    Estimate 27 + 85 by rounding each to the nearest 10.
  6. 6.
    Estimate 16 + 87 by rounding each to the nearest 10.
  7. 7.
    Estimate 228 - 194 by rounding each to the nearest 100.
  8. 8.
    Estimate 942 - 631 by rounding each to the nearest 100.
  9. 9.
    Estimate 644 - 274 by rounding each to the nearest 100.
  10. 10.
    Estimate 813 - 295 by rounding each to the nearest 100.
  11. 11.
    Estimate 565 - 254 by rounding each to the nearest 100.
  12. 12.
    Estimate 21 x 41 by rounding each to the nearest 10.
  13. 13.
    Estimate 29 x 69 by rounding each to the nearest 10.
  14. 14.
    Estimate 32 x 29 by rounding each to the nearest 10.
  15. 15.
    Estimate 25 x 53 by rounding each to the nearest 10.
  16. 16.
    Estimate 75 x 71 by rounding each to the nearest 10.
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