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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 624 · 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. 1.245.2 × 100 =
  2. 2.492.1 ÷ 100 =
  3. 3.252.1 ÷ 1000 =
  4. 4.257.5 × 1000 =
  5. 5.183.1 × 10 =
  6. 6.358.3 × 100 =
  7. 7.2.71 × 1000 =
  8. 8.12.37 × 10 =
  9. 9.4.91 × 10 =
  10. 10.27.08 × 10 =
  11. 11.53.1 ÷ 100 =
  12. 12.11.56 × 100 =
  13. 13.336.1 × 100 =
  14. 14.0.46 ÷ 10 =
  15. 15.54.5 × 1000 =
  16. 16.132.3 ÷ 1000 =
  17. 17.38.6 × 100 =
  18. 18.38.71 ÷ 10 =
  19. 19.179.8 ÷ 1000 =
  20. 20.429.1 × 10 =
  21. 21.166.1 ÷ 1000 =
  22. 22.2.74 × 1000 =
  23. 23.36.36 × 10 =
  24. 24.10.43 × 100 =
  25. 25.20.11 ÷ 100 =
  26. 26.400.9 × 10 =
  27. 27.121.1 × 10 =
  28. 28.17.47 × 10 =
  29. 29.284.8 ÷ 1000 =
  30. 30.429.1 × 1000 =
  31. 31.338.7 ÷ 10 =
  32. 32.306.2 × 1000 =
  33. 33.258.4 × 100 =
  34. 34.11.32 ÷ 1000 =
  35. 35.12.46 × 1000 =
  36. 36.366.1 × 10 =
  37. 37.3.99 × 10 =
  38. 38.206.7 × 10 =
  39. 39.32.14 × 10 =
  40. 40.140.1 ÷ 1000 =

Answer key

  1. 24520
  2. 4.921
  3. 0.2521
  4. 257500
  5. 1831
  6. 35830
  7. 2710
  8. 123.7
  9. 49.1
  10. 270.8
  11. 0.531
  12. 1156
  13. 33610
  14. 0.046
  15. 54500
  16. 0.1323
  17. 3860
  18. 3.871
  19. 0.1798
  20. 4291
  21. 0.1661
  22. 2740
  23. 363.6
  24. 1043
  25. 0.2011
  26. 4009
  27. 1211
  28. 174.7
  29. 0.2848
  30. 429100
  31. 33.87
  32. 306200
  33. 25840
  34. 0.01132
  35. 12460
  36. 3661
  37. 39.9
  38. 2067
  39. 321.4
  40. 0.1401

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