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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 805 · 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. 1.348.3 × 100 =
  2. 2.33.54 ÷ 100 =
  3. 3.20.46 ÷ 1000 =
  4. 4.12.96 ÷ 100 =
  5. 5.74.3 × 1000 =
  6. 6.298.3 × 1000 =
  7. 7.26.66 ÷ 1000 =
  8. 8.438.2 ÷ 10 =
  9. 9.464.9 × 10 =
  10. 10.59.2 ÷ 10 =
  11. 11.380.3 × 1000 =
  12. 12.396.4 ÷ 100 =
  13. 13.5.73 × 10 =
  14. 14.0.71 × 1000 =
  15. 15.49.51 ÷ 10 =
  16. 16.207.8 ÷ 10 =
  17. 17.22.75 ÷ 1000 =
  18. 18.240.1 ÷ 100 =
  19. 19.159.7 × 1000 =
  20. 20.20.35 ÷ 1000 =
  21. 21.98.7 ÷ 10 =
  22. 22.8.15 × 10 =
  23. 23.4.19 ÷ 1000 =
  24. 24.485.5 × 100 =
  25. 25.157.9 × 10 =
  26. 26.3.66 × 10 =
  27. 27.184.9 ÷ 100 =
  28. 28.2.47 ÷ 1000 =
  29. 29.14.21 × 10 =
  30. 30.174.8 ÷ 100 =
  31. 31.32.94 × 10 =
  32. 32.23.29 ÷ 100 =
  33. 33.19.25 ÷ 10 =
  34. 34.132.7 ÷ 10 =
  35. 35.351.2 ÷ 10 =
  36. 36.21.78 ÷ 1000 =
  37. 37.30.69 × 10 =
  38. 38.17.29 × 1000 =
  39. 39.81.8 × 1000 =
  40. 40.299.5 ÷ 1000 =

Answer key

  1. 34830
  2. 0.3354
  3. 0.02046
  4. 0.1296
  5. 74300
  6. 298300
  7. 0.02666
  8. 43.82
  9. 4649
  10. 5.92
  11. 380300
  12. 3.964
  13. 57.3
  14. 710
  15. 4.951
  16. 20.78
  17. 0.02275
  18. 2.401
  19. 159700
  20. 0.02035
  21. 9.87
  22. 81.5
  23. 0.00419
  24. 48550
  25. 1579
  26. 36.6
  27. 1.849
  28. 0.00247
  29. 142.1
  30. 1.748
  31. 329.4
  32. 0.2329
  33. 1.925
  34. 13.27
  35. 35.12
  36. 0.02178
  37. 306.9
  38. 17290
  39. 81800
  40. 0.2995

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