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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 109 · 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. 1.1.17 × 10 =
  2. 2.1.5 × 100 =
  3. 3.53.9 × 1000 =
  4. 4.31.73 ÷ 1000 =
  5. 5.13.42 × 100 =
  6. 6.1.25 × 10 =
  7. 7.27.02 ÷ 100 =
  8. 8.33.43 ÷ 100 =
  9. 9.11.02 × 100 =
  10. 10.41.41 ÷ 1000 =
  11. 11.277.1 × 1000 =
  12. 12.99.6 × 1000 =
  13. 13.35.87 ÷ 100 =
  14. 14.2.04 × 10 =
  15. 15.166.4 ÷ 100 =
  16. 16.247.5 × 100 =
  17. 17.19.39 × 1000 =
  18. 18.10.51 ÷ 100 =
  19. 19.486.1 ÷ 1000 =
  20. 20.374.8 × 10 =
  21. 21.19.61 × 10 =
  22. 22.9.72 ÷ 1000 =
  23. 23.189.1 ÷ 1000 =
  24. 24.14.08 × 1000 =
  25. 25.47.42 ÷ 1000 =
  26. 26.406.9 × 100 =
  27. 27.21.19 × 1000 =
  28. 28.223.3 ÷ 1000 =
  29. 29.2.07 × 10 =
  30. 30.5.82 × 10 =
  31. 31.29.24 × 10 =
  32. 32.34.66 ÷ 100 =
  33. 33.260.5 × 10 =
  34. 34.260.4 ÷ 1000 =
  35. 35.258.9 ÷ 100 =
  36. 36.48.01 ÷ 100 =
  37. 37.3.4 ÷ 1000 =
  38. 38.413.8 ÷ 100 =
  39. 39.15.56 × 10 =
  40. 40.97.1 × 1000 =

Answer key

  1. 11.7
  2. 150
  3. 53900
  4. 0.03173
  5. 1342
  6. 12.5
  7. 0.2702
  8. 0.3343
  9. 1102
  10. 0.04141
  11. 277100
  12. 99600
  13. 0.3587
  14. 20.4
  15. 1.664
  16. 24750
  17. 19390
  18. 0.1051
  19. 0.4861
  20. 3748
  21. 196.1
  22. 0.00972
  23. 0.1891
  24. 14080
  25. 0.04742
  26. 40690
  27. 21190
  28. 0.2233
  29. 20.7
  30. 58.2
  31. 292.4
  32. 0.3466
  33. 2605
  34. 0.2604
  35. 2.589
  36. 0.4801
  37. 0.0034
  38. 4.138
  39. 155.6
  40. 97100

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