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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 419 · 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. 1.240.6 × 100 =
  2. 2.14.63 × 100 =
  3. 3.450.9 × 100 =
  4. 4.40.78 ÷ 10 =
  5. 5.32.15 ÷ 1000 =
  6. 6.22.71 ÷ 10 =
  7. 7.234.9 × 100 =
  8. 8.22.61 ÷ 100 =
  9. 9.122.1 × 1000 =
  10. 10.90.2 × 1000 =
  11. 11.89.2 × 10 =
  12. 12.226.6 ÷ 10 =
  13. 13.91.4 ÷ 10 =
  14. 14.138.2 ÷ 100 =
  15. 15.60.5 × 100 =
  16. 16.40.58 ÷ 100 =
  17. 17.15.1 × 10 =
  18. 18.132.6 × 100 =
  19. 19.295.3 ÷ 100 =
  20. 20.9.1 ÷ 100 =
  21. 21.41.8 × 100 =
  22. 22.8.81 ÷ 10 =
  23. 23.17.04 ÷ 100 =
  24. 24.340.8 × 100 =
  25. 25.31.28 × 1000 =
  26. 26.116.3 × 100 =
  27. 27.45.8 ÷ 10 =
  28. 28.19.03 × 10 =
  29. 29.419.4 × 100 =
  30. 30.30.51 ÷ 100 =
  31. 31.469.5 ÷ 10 =
  32. 32.495.6 × 1000 =
  33. 33.24.12 × 1000 =
  34. 34.172.6 × 100 =
  35. 35.168.7 × 100 =
  36. 36.5.6 ÷ 1000 =
  37. 37.202.4 × 10 =
  38. 38.12.9 × 100 =
  39. 39.27.19 ÷ 100 =
  40. 40.22.27 ÷ 10 =

Answer key

  1. 24060
  2. 1463
  3. 45090
  4. 4.078
  5. 0.03215
  6. 2.271
  7. 23490
  8. 0.2261
  9. 122100
  10. 90200
  11. 892
  12. 22.66
  13. 9.14
  14. 1.382
  15. 6050
  16. 0.4058
  17. 151
  18. 13260
  19. 2.953
  20. 0.091
  21. 4180
  22. 0.881
  23. 0.1704
  24. 34080
  25. 31280
  26. 11630
  27. 4.58
  28. 190.3
  29. 41940
  30. 0.3051
  31. 46.95
  32. 495600
  33. 24120
  34. 17260
  35. 16870
  36. 0.0056
  37. 2024
  38. 1290
  39. 0.2719
  40. 2.227

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