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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 873 · 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. 1.49.28 × 100 =
  2. 2.25.71 × 100 =
  3. 3.5.69 ÷ 10 =
  4. 4.26.21 ÷ 10 =
  5. 5.80.7 × 1000 =
  6. 6.65.7 ÷ 10 =
  7. 7.95.8 × 1000 =
  8. 8.316.9 × 100 =
  9. 9.39.94 ÷ 1000 =
  10. 10.470.1 ÷ 10 =
  11. 11.15.01 × 1000 =
  12. 12.17.21 × 1000 =
  13. 13.17.93 × 10 =
  14. 14.46.86 ÷ 100 =
  15. 15.205.6 × 10 =
  16. 16.159.1 × 100 =
  17. 17.28.69 ÷ 1000 =
  18. 18.4.62 × 10 =
  19. 19.14.21 × 100 =
  20. 20.17.32 ÷ 1000 =
  21. 21.48.81 × 1000 =
  22. 22.1.86 ÷ 10 =
  23. 23.20.91 × 1000 =
  24. 24.309.6 × 10 =
  25. 25.42.97 ÷ 10 =
  26. 26.46.21 ÷ 100 =
  27. 27.32.74 ÷ 10 =
  28. 28.111.9 ÷ 10 =
  29. 29.353.6 ÷ 100 =
  30. 30.6.57 × 10 =
  31. 31.14.3 × 10 =
  32. 32.21.86 × 10 =
  33. 33.27.64 × 10 =
  34. 34.18.53 ÷ 1000 =
  35. 35.97.3 × 1000 =
  36. 36.459.1 ÷ 10 =
  37. 37.360.9 ÷ 1000 =
  38. 38.28.66 × 10 =
  39. 39.45.76 ÷ 1000 =
  40. 40.479.1 ÷ 100 =

Answer key

  1. 4928
  2. 2571
  3. 0.569
  4. 2.621
  5. 80700
  6. 6.57
  7. 95800
  8. 31690
  9. 0.03994
  10. 47.01
  11. 15010
  12. 17210
  13. 179.3
  14. 0.4686
  15. 2056
  16. 15910
  17. 0.02869
  18. 46.2
  19. 1421
  20. 0.01732
  21. 48810
  22. 0.186
  23. 20910
  24. 3096
  25. 4.297
  26. 0.4621
  27. 3.274
  28. 11.19
  29. 3.536
  30. 65.7
  31. 143
  32. 218.6
  33. 276.4
  34. 0.01853
  35. 97300
  36. 45.91
  37. 0.3609
  38. 286.6
  39. 0.04576
  40. 4.791

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