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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 531 · 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. 1.180.8 × 1000 =
  2. 2.37.94 ÷ 10 =
  3. 3.37.7 × 100 =
  4. 4.32.16 × 10 =
  5. 5.251.7 ÷ 1000 =
  6. 6.130.1 × 100 =
  7. 7.461.7 × 100 =
  8. 8.493.8 × 1000 =
  9. 9.474.5 × 10 =
  10. 10.12.03 × 10 =
  11. 11.49.03 × 100 =
  12. 12.23.75 × 1000 =
  13. 13.457.1 × 10 =
  14. 14.8.11 × 10 =
  15. 15.313.3 × 100 =
  16. 16.400.6 × 10 =
  17. 17.378.9 ÷ 1000 =
  18. 18.444.7 ÷ 100 =
  19. 19.45.6 ÷ 100 =
  20. 20.46.17 × 100 =
  21. 21.19.96 ÷ 100 =
  22. 22.87.1 ÷ 1000 =
  23. 23.421.5 × 10 =
  24. 24.44.21 × 100 =
  25. 25.30.49 × 1000 =
  26. 26.376.7 × 100 =
  27. 27.33.81 ÷ 1000 =
  28. 28.318.4 ÷ 100 =
  29. 29.162.6 × 100 =
  30. 30.49.31 × 100 =
  31. 31.287.4 × 100 =
  32. 32.50.1 ÷ 10 =
  33. 33.150.8 ÷ 10 =
  34. 34.33.05 ÷ 100 =
  35. 35.162.2 ÷ 10 =
  36. 36.13.46 × 100 =
  37. 37.255.1 ÷ 1000 =
  38. 38.10.96 × 1000 =
  39. 39.46.57 × 100 =
  40. 40.16.45 × 10 =

Answer key

  1. 180800
  2. 3.794
  3. 3770
  4. 321.6
  5. 0.2517
  6. 13010
  7. 46170
  8. 493800
  9. 4745
  10. 120.3
  11. 4903
  12. 23750
  13. 4571
  14. 81.1
  15. 31330
  16. 4006
  17. 0.3789
  18. 4.447
  19. 0.456
  20. 4617
  21. 0.1996
  22. 0.0871
  23. 4215
  24. 4421
  25. 30490
  26. 37670
  27. 0.03381
  28. 3.184
  29. 16260
  30. 4931
  31. 28740
  32. 5.01
  33. 15.08
  34. 0.3305
  35. 16.22
  36. 1346
  37. 0.2551
  38. 10960
  39. 4657
  40. 164.5

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