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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 519 · 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. 1.97.1 × 100 =
  2. 2.184.2 × 100 =
  3. 3.34.64 ÷ 10 =
  4. 4.157.7 × 10 =
  5. 5.29.25 × 100 =
  6. 6.32.41 ÷ 10 =
  7. 7.69.8 × 100 =
  8. 8.27.72 × 1000 =
  9. 9.5.11 × 10 =
  10. 10.437.4 × 1000 =
  11. 11.31.92 ÷ 10 =
  12. 12.347.1 ÷ 1000 =
  13. 13.46.9 ÷ 10 =
  14. 14.78.3 × 1000 =
  15. 15.42.71 ÷ 10 =
  16. 16.253.1 ÷ 1000 =
  17. 17.323.1 × 100 =
  18. 18.62.2 ÷ 100 =
  19. 19.241.7 × 10 =
  20. 20.96.4 ÷ 100 =
  21. 21.352.1 ÷ 100 =
  22. 22.351.4 × 10 =
  23. 23.18.49 ÷ 100 =
  24. 24.21.88 × 1000 =
  25. 25.136.5 × 1000 =
  26. 26.369.2 × 1000 =
  27. 27.6.2 × 1000 =
  28. 28.14.38 ÷ 100 =
  29. 29.170.5 × 10 =
  30. 30.413.7 ÷ 1000 =
  31. 31.41.1 × 10 =
  32. 32.488.6 ÷ 10 =
  33. 33.126.6 ÷ 10 =
  34. 34.219.1 ÷ 1000 =
  35. 35.245.8 × 10 =
  36. 36.170.1 ÷ 1000 =
  37. 37.212.1 × 100 =
  38. 38.20.93 ÷ 10 =
  39. 39.113.7 ÷ 10 =
  40. 40.264.1 × 10 =

Answer key

  1. 9710
  2. 18420
  3. 3.464
  4. 1577
  5. 2925
  6. 3.241
  7. 6980
  8. 27720
  9. 51.1
  10. 437400
  11. 3.192
  12. 0.3471
  13. 4.69
  14. 78300
  15. 4.271
  16. 0.2531
  17. 32310
  18. 0.622
  19. 2417
  20. 0.964
  21. 3.521
  22. 3514
  23. 0.1849
  24. 21880
  25. 136500
  26. 369200
  27. 6200
  28. 0.1438
  29. 1705
  30. 0.4137
  31. 411
  32. 48.86
  33. 12.66
  34. 0.2191
  35. 2458
  36. 0.1701
  37. 21210
  38. 2.093
  39. 11.37
  40. 2641

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