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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 73 − 80 by rounding each number to the nearest 10: ______
  2. Estimate 54 − 36 by rounding each number to the nearest 10: ______
  3. Estimate 44 − 78 by rounding each number to the nearest 10: ______
  4. Estimate 33 − 75 by rounding each number to the nearest 10: ______
  5. Estimate 50 − 39 by rounding each number to the nearest 10: ______
  6. Estimate 52 − 25 by rounding each number to the nearest 10: ______
  7. Estimate 64 − 80 by rounding each number to the nearest 10: ______
  8. Estimate 30 + 79 by rounding each number to the nearest 10: ______
  9. Estimate 38 + 82 by rounding each number to the nearest 10: ______
  10. Estimate 52 + 25 by rounding each number to the nearest 10: ______
  11. Estimate 25 + 31 by rounding each number to the nearest 10: ______
  12. Estimate 38 − 21 by rounding each number to the nearest 10: ______
  13. Estimate 57 − 24 by rounding each number to the nearest 10: ______
  14. Estimate 29 + 45 by rounding each number to the nearest 10: ______
  15. Estimate 55 + 83 by rounding each number to the nearest 10: ______
  16. Estimate 79 + 73 by rounding each number to the nearest 10: ______
  17. Estimate 38 + 80 by rounding each number to the nearest 10: ______
  18. Estimate 86 − 67 by rounding each number to the nearest 10: ______
  19. Estimate 45 − 86 by rounding each number to the nearest 10: ______
  20. Estimate 62 − 50 by rounding each number to the nearest 10: ______