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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 743 · 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. 1.10.4 × 1000 =
  2. 2.7.63 ÷ 100 =
  3. 3.62.2 × 1000 =
  4. 4.43.3 ÷ 100 =
  5. 5.205.4 × 1000 =
  6. 6.294.2 × 10 =
  7. 7.10.48 ÷ 1000 =
  8. 8.18.46 × 1000 =
  9. 9.66.1 × 100 =
  10. 10.11.09 × 100 =
  11. 11.91.8 ÷ 10 =
  12. 12.242.2 ÷ 1000 =
  13. 13.381.2 ÷ 10 =
  14. 14.278.6 ÷ 100 =
  15. 15.3.7 ÷ 10 =
  16. 16.5.31 × 100 =
  17. 17.40.52 × 100 =
  18. 18.276.2 × 10 =
  19. 19.411.1 × 100 =
  20. 20.302.2 × 100 =
  21. 21.14.04 ÷ 10 =
  22. 22.43.75 × 10 =
  23. 23.130.6 × 1000 =
  24. 24.437.2 × 10 =
  25. 25.57.7 × 10 =
  26. 26.37.84 ÷ 100 =
  27. 27.7.56 ÷ 10 =
  28. 28.6.48 × 100 =
  29. 29.147.1 × 100 =
  30. 30.48.42 ÷ 100 =
  31. 31.13.64 × 1000 =
  32. 32.133.4 ÷ 1000 =
  33. 33.29.12 × 10 =
  34. 34.188.2 × 1000 =
  35. 35.197.4 ÷ 100 =
  36. 36.110.2 ÷ 1000 =
  37. 37.457.8 × 10 =
  38. 38.201.1 × 10 =
  39. 39.40.65 × 100 =
  40. 40.15.3 ÷ 1000 =

Answer key

  1. 10400
  2. 0.0763
  3. 62200
  4. 0.433
  5. 205400
  6. 2942
  7. 0.01048
  8. 18460
  9. 6610
  10. 1109
  11. 9.18
  12. 0.2422
  13. 38.12
  14. 2.786
  15. 0.37
  16. 531
  17. 4052
  18. 2762
  19. 41110
  20. 30220
  21. 1.404
  22. 437.5
  23. 130600
  24. 4372
  25. 577
  26. 0.3784
  27. 0.756
  28. 648
  29. 14710
  30. 0.4842
  31. 13640
  32. 0.1334
  33. 291.2
  34. 188200
  35. 1.974
  36. 0.1102
  37. 4578
  38. 2011
  39. 4065
  40. 0.0153

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