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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 874 · 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. 1.494.2 ÷ 1000 =
  2. 2.72.1 ÷ 10 =
  3. 3.376.9 × 100 =
  4. 4.364.4 × 10 =
  5. 5.435.5 ÷ 1000 =
  6. 6.158.1 × 100 =
  7. 7.165.1 × 1000 =
  8. 8.13.79 ÷ 1000 =
  9. 9.339.1 × 100 =
  10. 10.2.65 × 10 =
  11. 11.48.25 ÷ 100 =
  12. 12.11.31 ÷ 10 =
  13. 13.32.21 × 10 =
  14. 14.46.76 ÷ 1000 =
  15. 15.439.7 ÷ 100 =
  16. 16.452.5 × 1000 =
  17. 17.17.29 × 1000 =
  18. 18.150.4 ÷ 100 =
  19. 19.49.8 ÷ 1000 =
  20. 20.214.6 × 1000 =
  21. 21.406.9 ÷ 10 =
  22. 22.20.51 × 100 =
  23. 23.262.1 ÷ 10 =
  24. 24.12.08 × 10 =
  25. 25.115.3 × 10 =
  26. 26.263.1 × 10 =
  27. 27.51.1 ÷ 10 =
  28. 28.48.08 ÷ 1000 =
  29. 29.31.21 × 10 =
  30. 30.130.4 × 100 =
  31. 31.470.5 ÷ 10 =
  32. 32.289.2 × 100 =
  33. 33.12.85 × 10 =
  34. 34.43.48 × 10 =
  35. 35.20.56 ÷ 100 =
  36. 36.18.61 ÷ 10 =
  37. 37.238.4 ÷ 1000 =
  38. 38.28.3 × 1000 =
  39. 39.180.6 ÷ 100 =
  40. 40.437.6 ÷ 10 =

Answer key

  1. 0.4942
  2. 7.21
  3. 37690
  4. 3644
  5. 0.4355
  6. 15810
  7. 165100
  8. 0.01379
  9. 33910
  10. 26.5
  11. 0.4825
  12. 1.131
  13. 322.1
  14. 0.04676
  15. 4.397
  16. 452500
  17. 17290
  18. 1.504
  19. 0.0498
  20. 214600
  21. 40.69
  22. 2051
  23. 26.21
  24. 120.8
  25. 1153
  26. 2631
  27. 5.11
  28. 0.04808
  29. 312.1
  30. 13040
  31. 47.05
  32. 28920
  33. 128.5
  34. 434.8
  35. 0.2056
  36. 1.861
  37. 0.2384
  38. 28300
  39. 1.806
  40. 43.76

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