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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 143 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.262.1 × 100 =
  2. 2.51.4 × 10 =
  3. 3.349.1 × 10 =
  4. 4.34.77 ÷ 100 =
  5. 5.8.61 ÷ 10 =
  6. 6.370.8 × 100 =
  7. 7.48.2 ÷ 100 =
  8. 8.35.13 ÷ 1000 =
  9. 9.66.4 × 1000 =
  10. 10.456.8 ÷ 100 =
  11. 11.47.69 × 100 =
  12. 12.89.2 ÷ 100 =
  13. 13.43.56 ÷ 10 =
  14. 14.34.79 × 100 =
  15. 15.191.7 ÷ 10 =
  16. 16.92.8 ÷ 1000 =
  17. 17.241.6 ÷ 100 =
  18. 18.152.3 × 1000 =
  19. 19.426.1 × 10 =
  20. 20.3.15 × 1000 =
  21. 21.10.65 ÷ 100 =
  22. 22.183.6 ÷ 10 =
  23. 23.350.7 ÷ 100 =
  24. 24.2.17 ÷ 100 =
  25. 25.116.7 ÷ 10 =
  26. 26.112.9 × 100 =
  27. 27.16.91 ÷ 100 =
  28. 28.446.8 ÷ 10 =
  29. 29.25.78 × 10 =
  30. 30.308.7 × 100 =
  31. 31.0.69 × 10 =
  32. 32.48.1 × 100 =
  33. 33.16.63 × 1000 =
  34. 34.39.42 ÷ 1000 =
  35. 35.34.5 ÷ 10 =
  36. 36.10.35 ÷ 1000 =
  37. 37.331.8 ÷ 100 =
  38. 38.133.1 × 1000 =
  39. 39.145.8 × 10 =
  40. 40.68.8 × 1000 =

Answer key

  1. 26210
  2. 514
  3. 3491
  4. 0.3477
  5. 0.861
  6. 37080
  7. 0.482
  8. 0.03513
  9. 66400
  10. 4.568
  11. 4769
  12. 0.892
  13. 4.356
  14. 3479
  15. 19.17
  16. 0.0928
  17. 2.416
  18. 152300
  19. 4261
  20. 3150
  21. 0.1065
  22. 18.36
  23. 3.507
  24. 0.0217
  25. 11.67
  26. 11290
  27. 0.1691
  28. 44.68
  29. 257.8
  30. 30870
  31. 6.9
  32. 4810
  33. 16630
  34. 0.03942
  35. 3.45
  36. 0.01035
  37. 3.318
  38. 133100
  39. 1458
  40. 68800

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