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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 220 · 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. 1.13.1 ÷ 10 =
  2. 2.17.77 ÷ 100 =
  3. 3.231.9 × 100 =
  4. 4.360.7 ÷ 100 =
  5. 5.286.4 ÷ 100 =
  6. 6.5.89 × 100 =
  7. 7.37.88 ÷ 100 =
  8. 8.49.28 ÷ 10 =
  9. 9.456.8 ÷ 100 =
  10. 10.384.6 × 1000 =
  11. 11.15.78 × 10 =
  12. 12.1.08 ÷ 10 =
  13. 13.430.9 × 1000 =
  14. 14.403.4 ÷ 100 =
  15. 15.226.7 ÷ 1000 =
  16. 16.274.1 ÷ 100 =
  17. 17.114.1 ÷ 100 =
  18. 18.154.4 × 10 =
  19. 19.264.3 ÷ 10 =
  20. 20.53.8 ÷ 10 =
  21. 21.10.16 × 10 =
  22. 22.206.9 × 10 =
  23. 23.30.18 ÷ 1000 =
  24. 24.5.57 × 100 =
  25. 25.37.81 ÷ 1000 =
  26. 26.55.1 × 10 =
  27. 27.130.5 ÷ 1000 =
  28. 28.45.21 ÷ 10 =
  29. 29.147.1 ÷ 1000 =
  30. 30.294.1 ÷ 1000 =
  31. 31.191.1 × 100 =
  32. 32.254.3 ÷ 10 =
  33. 33.7.08 × 1000 =
  34. 34.345.9 × 10 =
  35. 35.418.1 × 1000 =
  36. 36.6.81 ÷ 1000 =
  37. 37.63.6 × 1000 =
  38. 38.308.7 × 100 =
  39. 39.190.1 × 100 =
  40. 40.363.1 ÷ 100 =

Answer key

  1. 1.31
  2. 0.1777
  3. 23190
  4. 3.607
  5. 2.864
  6. 589
  7. 0.3788
  8. 4.928
  9. 4.568
  10. 384600
  11. 157.8
  12. 0.108
  13. 430900
  14. 4.034
  15. 0.2267
  16. 2.741
  17. 1.141
  18. 1544
  19. 26.43
  20. 5.38
  21. 101.6
  22. 2069
  23. 0.03018
  24. 557
  25. 0.03781
  26. 551
  27. 0.1305
  28. 4.521
  29. 0.1471
  30. 0.2941
  31. 19110
  32. 25.43
  33. 7080
  34. 3459
  35. 418100
  36. 0.00681
  37. 63600
  38. 30870
  39. 19010
  40. 3.631

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