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Estimation Worksheet

Recommended for 2nd Grade — 5th Grade

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Estimation Worksheet

Name: ____________________Date: ____________

Instructions: Estimating sums, differences, and products by rounding and compatible numbers.

20 problems

  1. Estimate 48 − 86 by rounding each number to the nearest 10: ______
  2. Estimate 48 − 56 by rounding each number to the nearest 10: ______
  3. Estimate 38 + 34 by rounding each number to the nearest 10: ______
  4. Estimate 87 − 88 by rounding each number to the nearest 10: ______
  5. Estimate 61 − 68 by rounding each number to the nearest 10: ______
  6. Estimate 25 + 77 by rounding each number to the nearest 10: ______
  7. Estimate 56 + 23 by rounding each number to the nearest 10: ______
  8. Estimate 60 + 66 by rounding each number to the nearest 10: ______
  9. Estimate 45 − 29 by rounding each number to the nearest 10: ______
  10. Estimate 64 + 84 by rounding each number to the nearest 10: ______
  11. Estimate 47 − 30 by rounding each number to the nearest 10: ______
  12. Estimate 76 − 72 by rounding each number to the nearest 10: ______
  13. Estimate 70 + 72 by rounding each number to the nearest 10: ______
  14. Estimate 89 + 38 by rounding each number to the nearest 10: ______
  15. Estimate 42 − 48 by rounding each number to the nearest 10: ______
  16. Estimate 50 + 84 by rounding each number to the nearest 10: ______
  17. Estimate 68 − 56 by rounding each number to the nearest 10: ______
  18. Estimate 83 + 28 by rounding each number to the nearest 10: ______
  19. Estimate 70 − 40 by rounding each number to the nearest 10: ______
  20. Estimate 85 + 60 by rounding each number to the nearest 10: ______