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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 568 · 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. 1.396.9 ÷ 100 =
  2. 2.37.37 × 100 =
  3. 3.408.2 ÷ 1000 =
  4. 4.22.82 × 1000 =
  5. 5.105.7 ÷ 100 =
  6. 6.33.08 ÷ 1000 =
  7. 7.231.4 × 100 =
  8. 8.25.89 ÷ 10 =
  9. 9.17.38 ÷ 1000 =
  10. 10.136.1 ÷ 100 =
  11. 11.25.85 ÷ 1000 =
  12. 12.1.83 × 10 =
  13. 13.16.24 × 10 =
  14. 14.26.24 ÷ 1000 =
  15. 15.256.4 × 1000 =
  16. 16.69.4 × 10 =
  17. 17.165.7 ÷ 1000 =
  18. 18.23.55 ÷ 1000 =
  19. 19.19.21 × 10 =
  20. 20.47.21 × 1000 =
  21. 21.366.9 ÷ 1000 =
  22. 22.2.84 ÷ 1000 =
  23. 23.40.18 × 1000 =
  24. 24.462.3 × 10 =
  25. 25.75.5 ÷ 10 =
  26. 26.433.3 × 100 =
  27. 27.22.41 × 100 =
  28. 28.16.52 × 10 =
  29. 29.284.1 ÷ 1000 =
  30. 30.44.61 × 1000 =
  31. 31.408.8 ÷ 1000 =
  32. 32.14.71 ÷ 10 =
  33. 33.430.8 ÷ 10 =
  34. 34.112.8 × 10 =
  35. 35.95.7 ÷ 1000 =
  36. 36.175.3 ÷ 10 =
  37. 37.13.48 × 1000 =
  38. 38.85.1 ÷ 1000 =
  39. 39.20.83 × 10 =
  40. 40.46.61 × 100 =

Answer key

  1. 3.969
  2. 3737
  3. 0.4082
  4. 22820
  5. 1.057
  6. 0.03308
  7. 23140
  8. 2.589
  9. 0.01738
  10. 1.361
  11. 0.02585
  12. 18.3
  13. 162.4
  14. 0.02624
  15. 256400
  16. 694
  17. 0.1657
  18. 0.02355
  19. 192.1
  20. 47210
  21. 0.3669
  22. 0.00284
  23. 40180
  24. 4623
  25. 7.55
  26. 43330
  27. 2241
  28. 165.2
  29. 0.2841
  30. 44610
  31. 0.4088
  32. 1.471
  33. 43.08
  34. 1128
  35. 0.0957
  36. 17.53
  37. 13480
  38. 0.0851
  39. 208.3
  40. 4661

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