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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 492 · 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. 1.5.85 × 10 =
  2. 2.37.59 ÷ 1000 =
  3. 3.127.3 × 1000 =
  4. 4.349.2 ÷ 10 =
  5. 5.179.8 ÷ 10 =
  6. 6.222.1 ÷ 100 =
  7. 7.71.1 × 1000 =
  8. 8.61.2 ÷ 10 =
  9. 9.361.2 × 1000 =
  10. 10.46.35 ÷ 100 =
  11. 11.158.7 ÷ 10 =
  12. 12.15.03 ÷ 100 =
  13. 13.377.9 ÷ 100 =
  14. 14.17.31 × 10 =
  15. 15.3.81 × 100 =
  16. 16.2.11 × 10 =
  17. 17.16.2 × 1000 =
  18. 18.73.6 × 10 =
  19. 19.18.68 × 1000 =
  20. 20.86.8 × 1000 =
  21. 21.90.5 ÷ 100 =
  22. 22.410.9 ÷ 10 =
  23. 23.156.9 × 1000 =
  24. 24.183.2 × 10 =
  25. 25.84.1 ÷ 100 =
  26. 26.278.6 × 100 =
  27. 27.346.7 × 1000 =
  28. 28.3.65 × 10 =
  29. 29.275.7 ÷ 100 =
  30. 30.344.6 × 1000 =
  31. 31.433.7 × 1000 =
  32. 32.3.28 ÷ 10 =
  33. 33.45.23 × 10 =
  34. 34.413.7 × 100 =
  35. 35.457.7 × 100 =
  36. 36.403.7 ÷ 100 =
  37. 37.10.87 ÷ 10 =
  38. 38.28.41 ÷ 1000 =
  39. 39.1.89 × 1000 =
  40. 40.6.35 ÷ 1000 =

Answer key

  1. 58.5
  2. 0.03759
  3. 127300
  4. 34.92
  5. 17.98
  6. 2.221
  7. 71100
  8. 6.12
  9. 361200
  10. 0.4635
  11. 15.87
  12. 0.1503
  13. 3.779
  14. 173.1
  15. 381
  16. 21.1
  17. 16200
  18. 736
  19. 18680
  20. 86800
  21. 0.905
  22. 41.09
  23. 156900
  24. 1832
  25. 0.841
  26. 27860
  27. 346700
  28. 36.5
  29. 2.757
  30. 344600
  31. 433700
  32. 0.328
  33. 452.3
  34. 41370
  35. 45770
  36. 4.037
  37. 1.087
  38. 0.02841
  39. 1890
  40. 0.00635

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