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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 470 · 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. 1.43.83 ÷ 100 =
  2. 2.28.6 × 1000 =
  3. 3.27.58 ÷ 10 =
  4. 4.18.21 × 1000 =
  5. 5.21.24 × 1000 =
  6. 6.248.1 ÷ 100 =
  7. 7.32.7 ÷ 100 =
  8. 8.71.3 ÷ 10 =
  9. 9.47.46 × 100 =
  10. 10.34.09 × 1000 =
  11. 11.72.8 × 100 =
  12. 12.149.5 ÷ 10 =
  13. 13.78.3 × 100 =
  14. 14.12.05 × 100 =
  15. 15.48.89 × 100 =
  16. 16.9.2 × 100 =
  17. 17.54.2 × 10 =
  18. 18.9.43 × 1000 =
  19. 19.7.7 ÷ 10 =
  20. 20.413.4 ÷ 10 =
  21. 21.247.1 ÷ 10 =
  22. 22.46.15 × 1000 =
  23. 23.29.13 × 10 =
  24. 24.323.8 ÷ 10 =
  25. 25.22.32 × 100 =
  26. 26.143.3 × 1000 =
  27. 27.19.99 ÷ 1000 =
  28. 28.7.02 × 1000 =
  29. 29.1.8 ÷ 10 =
  30. 30.38.1 ÷ 10 =
  31. 31.159.5 ÷ 100 =
  32. 32.340.6 × 100 =
  33. 33.39.69 × 100 =
  34. 34.43.5 × 10 =
  35. 35.16.76 × 1000 =
  36. 36.97.1 ÷ 100 =
  37. 37.42.24 × 1000 =
  38. 38.346.4 ÷ 1000 =
  39. 39.473.1 ÷ 1000 =
  40. 40.5.57 × 1000 =

Answer key

  1. 0.4383
  2. 28600
  3. 2.758
  4. 18210
  5. 21240
  6. 2.481
  7. 0.327
  8. 7.13
  9. 4746
  10. 34090
  11. 7280
  12. 14.95
  13. 7830
  14. 1205
  15. 4889
  16. 920
  17. 542
  18. 9430
  19. 0.77
  20. 41.34
  21. 24.71
  22. 46150
  23. 291.3
  24. 32.38
  25. 2232
  26. 143300
  27. 0.01999
  28. 7020
  29. 0.18
  30. 3.81
  31. 1.595
  32. 34060
  33. 3969
  34. 435
  35. 16760
  36. 0.971
  37. 42240
  38. 0.3464
  39. 0.4731
  40. 5570

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