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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 621 · 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. 1.318.3 ÷ 1000 =
  2. 2.202.1 × 10 =
  3. 3.44.21 ÷ 1000 =
  4. 4.420.5 × 100 =
  5. 5.332.7 ÷ 10 =
  6. 6.499.1 ÷ 10 =
  7. 7.135.1 ÷ 100 =
  8. 8.141.2 ÷ 10 =
  9. 9.6.32 ÷ 10 =
  10. 10.424.7 × 10 =
  11. 11.483.1 × 100 =
  12. 12.25.68 ÷ 10 =
  13. 13.21.21 ÷ 10 =
  14. 14.25.39 ÷ 10 =
  15. 15.363.4 ÷ 10 =
  16. 16.446.7 ÷ 100 =
  17. 17.1.08 ÷ 1000 =
  18. 18.21.65 ÷ 100 =
  19. 19.404.7 × 1000 =
  20. 20.414.4 × 10 =
  21. 21.411.9 ÷ 10 =
  22. 22.2.73 ÷ 1000 =
  23. 23.447.8 × 1000 =
  24. 24.282.6 ÷ 100 =
  25. 25.13.58 × 100 =
  26. 26.4.05 × 1000 =
  27. 27.47.71 × 1000 =
  28. 28.183.2 × 1000 =
  29. 29.39.55 ÷ 1000 =
  30. 30.452.2 × 10 =
  31. 31.41.83 ÷ 10 =
  32. 32.225.2 ÷ 10 =
  33. 33.136.1 ÷ 1000 =
  34. 34.378.8 ÷ 1000 =
  35. 35.27.06 ÷ 100 =
  36. 36.0.64 × 100 =
  37. 37.370.4 ÷ 10 =
  38. 38.159.4 × 1000 =
  39. 39.17.47 ÷ 10 =
  40. 40.350.5 ÷ 1000 =

Answer key

  1. 0.3183
  2. 2021
  3. 0.04421
  4. 42050
  5. 33.27
  6. 49.91
  7. 1.351
  8. 14.12
  9. 0.632
  10. 4247
  11. 48310
  12. 2.568
  13. 2.121
  14. 2.539
  15. 36.34
  16. 4.467
  17. 0.00108
  18. 0.2165
  19. 404700
  20. 4144
  21. 41.19
  22. 0.00273
  23. 447800
  24. 2.826
  25. 1358
  26. 4050
  27. 47710
  28. 183200
  29. 0.03955
  30. 4522
  31. 4.183
  32. 22.52
  33. 0.1361
  34. 0.3788
  35. 0.2706
  36. 64
  37. 37.04
  38. 159400
  39. 1.747
  40. 0.3505

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