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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 30 · 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. 1.43.03 × 1000 =
  2. 2.297.2 ÷ 10 =
  3. 3.28.51 × 10 =
  4. 4.32.27 × 10 =
  5. 5.40.81 × 100 =
  6. 6.46.99 × 1000 =
  7. 7.5.8 × 100 =
  8. 8.188.2 ÷ 1000 =
  9. 9.212.5 ÷ 100 =
  10. 10.26.84 ÷ 10 =
  11. 11.18.59 × 100 =
  12. 12.15.4 ÷ 100 =
  13. 13.457.8 × 1000 =
  14. 14.160.6 × 100 =
  15. 15.18.56 ÷ 100 =
  16. 16.38.01 ÷ 1000 =
  17. 17.29.34 × 1000 =
  18. 18.45.53 × 10 =
  19. 19.40.31 ÷ 1000 =
  20. 20.6.6 ÷ 1000 =
  21. 21.10.74 × 1000 =
  22. 22.9.82 × 100 =
  23. 23.38.2 ÷ 10 =
  24. 24.11.81 × 10 =
  25. 25.230.2 ÷ 100 =
  26. 26.291.2 × 100 =
  27. 27.20.62 ÷ 1000 =
  28. 28.272.1 ÷ 10 =
  29. 29.141.2 ÷ 1000 =
  30. 30.196.9 ÷ 10 =
  31. 31.39.66 ÷ 100 =
  32. 32.23.98 ÷ 1000 =
  33. 33.31.41 × 10 =
  34. 34.1.75 × 10 =
  35. 35.93.2 ÷ 100 =
  36. 36.8.27 × 1000 =
  37. 37.325.2 × 10 =
  38. 38.13.8 ÷ 100 =
  39. 39.321.4 ÷ 10 =
  40. 40.41.73 ÷ 100 =

Answer key

  1. 43030
  2. 29.72
  3. 285.1
  4. 322.7
  5. 4081
  6. 46990
  7. 580
  8. 0.1882
  9. 2.125
  10. 2.684
  11. 1859
  12. 0.154
  13. 457800
  14. 16060
  15. 0.1856
  16. 0.03801
  17. 29340
  18. 455.3
  19. 0.04031
  20. 0.0066
  21. 10740
  22. 982
  23. 3.82
  24. 118.1
  25. 2.302
  26. 29120
  27. 0.02062
  28. 27.21
  29. 0.1412
  30. 19.69
  31. 0.3966
  32. 0.02398
  33. 314.1
  34. 17.5
  35. 0.932
  36. 8270
  37. 3252
  38. 0.138
  39. 32.14
  40. 0.4173

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