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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 175 · 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. 1.72.4 × 1000 =
  2. 2.279.6 ÷ 100 =
  3. 3.18.47 ÷ 1000 =
  4. 4.0.16 ÷ 10 =
  5. 5.46.71 × 10 =
  6. 6.377.7 × 1000 =
  7. 7.354.1 × 10 =
  8. 8.19.9 × 10 =
  9. 9.41.86 × 10 =
  10. 10.430.1 ÷ 1000 =
  11. 11.353.1 ÷ 10 =
  12. 12.48.67 ÷ 100 =
  13. 13.29.88 × 10 =
  14. 14.20.29 × 10 =
  15. 15.197.9 × 1000 =
  16. 16.270.9 × 100 =
  17. 17.34.47 ÷ 1000 =
  18. 18.16.08 ÷ 1000 =
  19. 19.393.5 × 1000 =
  20. 20.6.42 × 10 =
  21. 21.87.6 × 1000 =
  22. 22.22.64 × 10 =
  23. 23.238.4 × 10 =
  24. 24.119.1 × 100 =
  25. 25.12.31 × 1000 =
  26. 26.14.15 × 10 =
  27. 27.4.6 × 10 =
  28. 28.48.1 ÷ 10 =
  29. 29.366.6 × 1000 =
  30. 30.199.3 ÷ 10 =
  31. 31.47.55 ÷ 10 =
  32. 32.339.1 × 10 =
  33. 33.10.22 × 100 =
  34. 34.352.9 × 100 =
  35. 35.164.2 ÷ 100 =
  36. 36.207.1 ÷ 1000 =
  37. 37.301.9 ÷ 10 =
  38. 38.238.7 × 1000 =
  39. 39.83.9 ÷ 100 =
  40. 40.13.42 ÷ 10 =

Answer key

  1. 72400
  2. 2.796
  3. 0.01847
  4. 0.016
  5. 467.1
  6. 377700
  7. 3541
  8. 199
  9. 418.6
  10. 0.4301
  11. 35.31
  12. 0.4867
  13. 298.8
  14. 202.9
  15. 197900
  16. 27090
  17. 0.03447
  18. 0.01608
  19. 393500
  20. 64.2
  21. 87600
  22. 226.4
  23. 2384
  24. 11910
  25. 12310
  26. 141.5
  27. 46
  28. 4.81
  29. 366600
  30. 19.93
  31. 4.755
  32. 3391
  33. 1022
  34. 35290
  35. 1.642
  36. 0.2071
  37. 30.19
  38. 238700
  39. 0.839
  40. 1.342

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