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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 698 · 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. 1.10.18 × 100 =
  2. 2.13.7 × 1000 =
  3. 3.347.8 × 10 =
  4. 4.4.22 ÷ 1000 =
  5. 5.48.56 × 100 =
  6. 6.230.7 × 100 =
  7. 7.430.1 ÷ 100 =
  8. 8.43.73 ÷ 100 =
  9. 9.33.06 ÷ 10 =
  10. 10.26.1 × 10 =
  11. 11.45.07 × 1000 =
  12. 12.75.6 ÷ 10 =
  13. 13.360.1 × 100 =
  14. 14.8.23 ÷ 100 =
  15. 15.72.3 × 100 =
  16. 16.45.16 × 10 =
  17. 17.479.1 × 100 =
  18. 18.171.1 ÷ 100 =
  19. 19.11.42 ÷ 100 =
  20. 20.439.9 ÷ 1000 =
  21. 21.6.51 × 100 =
  22. 22.21.76 × 10 =
  23. 23.74.7 ÷ 1000 =
  24. 24.25.74 ÷ 100 =
  25. 25.33.07 ÷ 1000 =
  26. 26.437.7 × 10 =
  27. 27.281.1 × 1000 =
  28. 28.15.63 × 10 =
  29. 29.421.8 × 1000 =
  30. 30.48.13 × 10 =
  31. 31.398.6 × 10 =
  32. 32.31.55 × 10 =
  33. 33.290.1 × 100 =
  34. 34.381.7 ÷ 100 =
  35. 35.0.51 ÷ 1000 =
  36. 36.29.78 ÷ 1000 =
  37. 37.38.04 × 1000 =
  38. 38.140.2 × 100 =
  39. 39.169.8 × 1000 =
  40. 40.259.5 ÷ 10 =

Answer key

  1. 1018
  2. 13700
  3. 3478
  4. 0.00422
  5. 4856
  6. 23070
  7. 4.301
  8. 0.4373
  9. 3.306
  10. 261
  11. 45070
  12. 7.56
  13. 36010
  14. 0.0823
  15. 7230
  16. 451.6
  17. 47910
  18. 1.711
  19. 0.1142
  20. 0.4399
  21. 651
  22. 217.6
  23. 0.0747
  24. 0.2574
  25. 0.03307
  26. 4377
  27. 281100
  28. 156.3
  29. 421800
  30. 481.3
  31. 3986
  32. 315.5
  33. 29010
  34. 3.817
  35. 0.00051
  36. 0.02978
  37. 38040
  38. 14020
  39. 169800
  40. 25.95

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