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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 78 + 37 by rounding each number to the nearest 10: ______
  2. Estimate 62 + 51 by rounding each number to the nearest 10: ______
  3. Estimate 31 − 79 by rounding each number to the nearest 10: ______
  4. Estimate 29 + 50 by rounding each number to the nearest 10: ______
  5. Estimate 38 + 69 by rounding each number to the nearest 10: ______
  6. Estimate 58 + 58 by rounding each number to the nearest 10: ______
  7. Estimate 74 − 33 by rounding each number to the nearest 10: ______
  8. Estimate 55 − 40 by rounding each number to the nearest 10: ______
  9. Estimate 34 + 55 by rounding each number to the nearest 10: ______
  10. Estimate 31 + 72 by rounding each number to the nearest 10: ______
  11. Estimate 85 + 58 by rounding each number to the nearest 10: ______
  12. Estimate 74 − 36 by rounding each number to the nearest 10: ______
  13. Estimate 39 + 45 by rounding each number to the nearest 10: ______
  14. Estimate 80 + 35 by rounding each number to the nearest 10: ______
  15. Estimate 26 − 35 by rounding each number to the nearest 10: ______
  16. Estimate 85 − 46 by rounding each number to the nearest 10: ______
  17. Estimate 51 − 46 by rounding each number to the nearest 10: ______
  18. Estimate 54 − 69 by rounding each number to the nearest 10: ______
  19. Estimate 34 + 54 by rounding each number to the nearest 10: ______
  20. Estimate 27 − 30 by rounding each number to the nearest 10: ______