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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 514 · 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. 1.97.4 × 100 =
  2. 2.14.23 × 100 =
  3. 3.22.33 × 10 =
  4. 4.72.8 × 10 =
  5. 5.157.1 × 100 =
  6. 6.279.8 × 100 =
  7. 7.42.69 ÷ 10 =
  8. 8.59.1 × 10 =
  9. 9.381.2 ÷ 1000 =
  10. 10.6.54 × 100 =
  11. 11.5.11 ÷ 100 =
  12. 12.0.43 ÷ 1000 =
  13. 13.46.03 ÷ 10 =
  14. 14.10.79 ÷ 1000 =
  15. 15.256.1 ÷ 10 =
  16. 16.453.5 ÷ 10 =
  17. 17.413.9 × 1000 =
  18. 18.318.4 × 10 =
  19. 19.32.04 ÷ 10 =
  20. 20.258.4 × 1000 =
  21. 21.466.8 × 10 =
  22. 22.1.73 ÷ 10 =
  23. 23.21.33 ÷ 1000 =
  24. 24.2.61 ÷ 1000 =
  25. 25.20.35 × 10 =
  26. 26.77.5 ÷ 100 =
  27. 27.346.9 ÷ 10 =
  28. 28.472.7 × 1000 =
  29. 29.26.41 ÷ 10 =
  30. 30.44.39 × 100 =
  31. 31.315.5 ÷ 10 =
  32. 32.72.5 ÷ 10 =
  33. 33.4.54 ÷ 10 =
  34. 34.6.86 ÷ 100 =
  35. 35.49.49 × 100 =
  36. 36.54.6 × 1000 =
  37. 37.378.7 × 10 =
  38. 38.310.8 ÷ 10 =
  39. 39.25.53 ÷ 10 =
  40. 40.18.27 × 100 =

Answer key

  1. 9740
  2. 1423
  3. 223.3
  4. 728
  5. 15710
  6. 27980
  7. 4.269
  8. 591
  9. 0.3812
  10. 654
  11. 0.0511
  12. 0.00043
  13. 4.603
  14. 0.01079
  15. 25.61
  16. 45.35
  17. 413900
  18. 3184
  19. 3.204
  20. 258400
  21. 4668
  22. 0.173
  23. 0.02133
  24. 0.00261
  25. 203.5
  26. 0.775
  27. 34.69
  28. 472700
  29. 2.641
  30. 4439
  31. 31.55
  32. 7.25
  33. 0.454
  34. 0.0686
  35. 4949
  36. 54600
  37. 3787
  38. 31.08
  39. 2.553
  40. 1827

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