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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 630 · 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. 1.387.7 × 1000 =
  2. 2.0.37 ÷ 1000 =
  3. 3.2.25 × 10 =
  4. 4.47.17 × 10 =
  5. 5.35.32 × 1000 =
  6. 6.11.56 ÷ 100 =
  7. 7.10.09 × 1000 =
  8. 8.310.1 ÷ 1000 =
  9. 9.84.9 × 100 =
  10. 10.322.2 × 10 =
  11. 11.370.9 ÷ 1000 =
  12. 12.106.6 × 1000 =
  13. 13.0.38 × 100 =
  14. 14.166.5 × 10 =
  15. 15.207.7 ÷ 1000 =
  16. 16.221.7 × 10 =
  17. 17.49.73 ÷ 10 =
  18. 18.10.28 ÷ 10 =
  19. 19.41.65 × 1000 =
  20. 20.32.1 ÷ 10 =
  21. 21.41.51 ÷ 10 =
  22. 22.199.5 ÷ 100 =
  23. 23.43.42 × 10 =
  24. 24.13.04 ÷ 100 =
  25. 25.47.61 × 10 =
  26. 26.7.65 ÷ 100 =
  27. 27.29.47 × 10 =
  28. 28.96.1 × 1000 =
  29. 29.40.16 ÷ 10 =
  30. 30.152.2 × 10 =
  31. 31.1.93 × 1000 =
  32. 32.404.4 × 10 =
  33. 33.18.84 ÷ 100 =
  34. 34.49.39 × 10 =
  35. 35.387.5 × 10 =
  36. 36.342.3 × 1000 =
  37. 37.475.6 × 1000 =
  38. 38.487.5 ÷ 1000 =
  39. 39.448.6 × 100 =
  40. 40.163.4 ÷ 100 =

Answer key

  1. 387700
  2. 0.00037
  3. 22.5
  4. 471.7
  5. 35320
  6. 0.1156
  7. 10090
  8. 0.3101
  9. 8490
  10. 3222
  11. 0.3709
  12. 106600
  13. 38
  14. 1665
  15. 0.2077
  16. 2217
  17. 4.973
  18. 1.028
  19. 41650
  20. 3.21
  21. 4.151
  22. 1.995
  23. 434.2
  24. 0.1304
  25. 476.1
  26. 0.0765
  27. 294.7
  28. 96100
  29. 4.016
  30. 1522
  31. 1930
  32. 4044
  33. 0.1884
  34. 493.9
  35. 3875
  36. 342300
  37. 475600
  38. 0.4875
  39. 44860
  40. 1.634

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