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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 431 · 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. 1.35.38 × 10 =
  2. 2.3.88 × 100 =
  3. 3.27.16 ÷ 10 =
  4. 4.309.3 × 100 =
  5. 5.1.25 × 1000 =
  6. 6.134.9 ÷ 10 =
  7. 7.45.11 ÷ 10 =
  8. 8.269.2 ÷ 100 =
  9. 9.2.41 ÷ 10 =
  10. 10.20.07 ÷ 10 =
  11. 11.45.05 × 100 =
  12. 12.358.7 × 100 =
  13. 13.479.4 × 1000 =
  14. 14.2.31 ÷ 1000 =
  15. 15.10.54 × 10 =
  16. 16.8.39 ÷ 1000 =
  17. 17.20.4 × 10 =
  18. 18.13.31 × 100 =
  19. 19.30.88 × 10 =
  20. 20.329.6 × 100 =
  21. 21.21.61 × 100 =
  22. 22.7.86 × 10 =
  23. 23.49.43 ÷ 100 =
  24. 24.73.2 ÷ 10 =
  25. 25.64.7 ÷ 100 =
  26. 26.257.9 × 100 =
  27. 27.298.5 × 10 =
  28. 28.23.8 ÷ 1000 =
  29. 29.191.1 ÷ 10 =
  30. 30.14.91 ÷ 10 =
  31. 31.394.5 × 10 =
  32. 32.286.7 ÷ 1000 =
  33. 33.346.6 × 100 =
  34. 34.22.4 ÷ 100 =
  35. 35.5.27 × 10 =
  36. 36.37.86 × 10 =
  37. 37.425.3 ÷ 10 =
  38. 38.23.11 × 100 =
  39. 39.55.1 ÷ 10 =
  40. 40.391.7 × 100 =

Answer key

  1. 353.8
  2. 388
  3. 2.716
  4. 30930
  5. 1250
  6. 13.49
  7. 4.511
  8. 2.692
  9. 0.241
  10. 2.007
  11. 4505
  12. 35870
  13. 479400
  14. 0.00231
  15. 105.4
  16. 0.00839
  17. 204
  18. 1331
  19. 308.8
  20. 32960
  21. 2161
  22. 78.6
  23. 0.4943
  24. 7.32
  25. 0.647
  26. 25790
  27. 2985
  28. 0.0238
  29. 19.11
  30. 1.491
  31. 3945
  32. 0.2867
  33. 34660
  34. 0.224
  35. 52.7
  36. 378.6
  37. 42.53
  38. 2311
  39. 5.51
  40. 39170

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