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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 860 · 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. 1.244.7 ÷ 100 =
  2. 2.48.21 ÷ 100 =
  3. 3.32.21 ÷ 100 =
  4. 4.267.7 ÷ 10 =
  5. 5.488.3 × 10 =
  6. 6.32.61 × 100 =
  7. 7.303.8 × 1000 =
  8. 8.206.4 × 1000 =
  9. 9.246.4 ÷ 100 =
  10. 10.125.6 ÷ 10 =
  11. 11.26.5 ÷ 10 =
  12. 12.18.24 ÷ 10 =
  13. 13.44.64 ÷ 1000 =
  14. 14.4.71 × 100 =
  15. 15.11.37 ÷ 100 =
  16. 16.2.31 ÷ 100 =
  17. 17.155.4 ÷ 10 =
  18. 18.44.17 × 1000 =
  19. 19.15.78 × 100 =
  20. 20.33.41 ÷ 100 =
  21. 21.444.3 × 10 =
  22. 22.243.8 × 100 =
  23. 23.42.83 ÷ 1000 =
  24. 24.30.27 ÷ 10 =
  25. 25.318.7 × 100 =
  26. 26.12.21 × 10 =
  27. 27.291.9 × 1000 =
  28. 28.44.24 × 1000 =
  29. 29.1.87 × 10 =
  30. 30.18.85 ÷ 100 =
  31. 31.8.25 ÷ 1000 =
  32. 32.371.3 ÷ 10 =
  33. 33.113.8 ÷ 10 =
  34. 34.25.05 ÷ 10 =
  35. 35.17.1 × 100 =
  36. 36.41.09 ÷ 10 =
  37. 37.24.21 ÷ 10 =
  38. 38.210.6 × 1000 =
  39. 39.413.9 × 10 =
  40. 40.39.46 × 1000 =

Answer key

  1. 2.447
  2. 0.4821
  3. 0.3221
  4. 26.77
  5. 4883
  6. 3261
  7. 303800
  8. 206400
  9. 2.464
  10. 12.56
  11. 2.65
  12. 1.824
  13. 0.04464
  14. 471
  15. 0.1137
  16. 0.0231
  17. 15.54
  18. 44170
  19. 1578
  20. 0.3341
  21. 4443
  22. 24380
  23. 0.04283
  24. 3.027
  25. 31870
  26. 122.1
  27. 291900
  28. 44240
  29. 18.7
  30. 0.1885
  31. 0.00825
  32. 37.13
  33. 11.38
  34. 2.505
  35. 1710
  36. 4.109
  37. 2.421
  38. 210600
  39. 4139
  40. 39460

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