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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 398 · 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. 1.43.69 × 10 =
  2. 2.18.15 ÷ 1000 =
  3. 3.4.66 ÷ 10 =
  4. 4.28.64 × 10 =
  5. 5.33.84 × 100 =
  6. 6.17.35 × 1000 =
  7. 7.46.19 ÷ 1000 =
  8. 8.157.9 ÷ 1000 =
  9. 9.2.59 ÷ 10 =
  10. 10.480.2 × 1000 =
  11. 11.73.1 ÷ 1000 =
  12. 12.46.78 ÷ 1000 =
  13. 13.27.68 ÷ 10 =
  14. 14.138.9 ÷ 10 =
  15. 15.4.81 ÷ 100 =
  16. 16.351.4 × 100 =
  17. 17.5.08 × 100 =
  18. 18.97.8 × 100 =
  19. 19.47.73 × 100 =
  20. 20.285.4 × 10 =
  21. 21.215.5 ÷ 10 =
  22. 22.41.75 ÷ 100 =
  23. 23.48.17 ÷ 10 =
  24. 24.43.16 × 1000 =
  25. 25.17.49 ÷ 1000 =
  26. 26.13.08 × 100 =
  27. 27.19.42 × 100 =
  28. 28.74.5 ÷ 10 =
  29. 29.24.63 × 1000 =
  30. 30.18.77 × 1000 =
  31. 31.393.9 ÷ 100 =
  32. 32.13.79 × 10 =
  33. 33.24.05 ÷ 10 =
  34. 34.15.63 ÷ 10 =
  35. 35.259.1 × 1000 =
  36. 36.0.31 ÷ 100 =
  37. 37.8.39 ÷ 10 =
  38. 38.28.28 ÷ 10 =
  39. 39.278.3 × 1000 =
  40. 40.21.79 × 10 =

Answer key

  1. 436.9
  2. 0.01815
  3. 0.466
  4. 286.4
  5. 3384
  6. 17350
  7. 0.04619
  8. 0.1579
  9. 0.259
  10. 480200
  11. 0.0731
  12. 0.04678
  13. 2.768
  14. 13.89
  15. 0.0481
  16. 35140
  17. 508
  18. 9780
  19. 4773
  20. 2854
  21. 21.55
  22. 0.4175
  23. 4.817
  24. 43160
  25. 0.01749
  26. 1308
  27. 1942
  28. 7.45
  29. 24630
  30. 18770
  31. 3.939
  32. 137.9
  33. 2.405
  34. 1.563
  35. 259100
  36. 0.0031
  37. 0.839
  38. 2.828
  39. 278300
  40. 217.9

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