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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 803 · 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. 1.359.1 × 100 =
  2. 2.321.1 × 10 =
  3. 3.22.54 ÷ 100 =
  4. 4.145.3 × 1000 =
  5. 5.55.8 ÷ 10 =
  6. 6.13.11 × 1000 =
  7. 7.232.8 × 10 =
  8. 8.199.1 ÷ 10 =
  9. 9.40.1 × 10 =
  10. 10.39.13 × 10 =
  11. 11.5.43 × 10 =
  12. 12.24.53 ÷ 100 =
  13. 13.11.81 ÷ 100 =
  14. 14.51.5 ÷ 100 =
  15. 15.26.06 ÷ 100 =
  16. 16.82.2 × 10 =
  17. 17.28.12 × 100 =
  18. 18.15.98 × 100 =
  19. 19.45.77 × 10 =
  20. 20.27.09 ÷ 100 =
  21. 21.224.7 ÷ 10 =
  22. 22.241.8 ÷ 10 =
  23. 23.49.18 ÷ 10 =
  24. 24.385.3 × 1000 =
  25. 25.29.87 × 10 =
  26. 26.20.36 ÷ 100 =
  27. 27.146.9 ÷ 10 =
  28. 28.48.5 × 10 =
  29. 29.169.8 × 1000 =
  30. 30.138.7 × 1000 =
  31. 31.3.93 × 1000 =
  32. 32.28.08 × 100 =
  33. 33.54.1 ÷ 1000 =
  34. 34.432.5 × 10 =
  35. 35.4.71 × 100 =
  36. 36.40.15 × 10 =
  37. 37.18.42 × 10 =
  38. 38.18.82 × 10 =
  39. 39.46.25 ÷ 1000 =
  40. 40.249.6 ÷ 10 =

Answer key

  1. 35910
  2. 3211
  3. 0.2254
  4. 145300
  5. 5.58
  6. 13110
  7. 2328
  8. 19.91
  9. 401
  10. 391.3
  11. 54.3
  12. 0.2453
  13. 0.1181
  14. 0.515
  15. 0.2606
  16. 822
  17. 2812
  18. 1598
  19. 457.7
  20. 0.2709
  21. 22.47
  22. 24.18
  23. 4.918
  24. 385300
  25. 298.7
  26. 0.2036
  27. 14.69
  28. 485
  29. 169800
  30. 138700
  31. 3930
  32. 2808
  33. 0.0541
  34. 4325
  35. 471
  36. 401.5
  37. 184.2
  38. 188.2
  39. 0.04625
  40. 24.96

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