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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 381 · 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. 1.85.6 ÷ 1000 =
  2. 2.304.3 × 1000 =
  3. 3.7.23 × 10 =
  4. 4.178.3 × 100 =
  5. 5.120.6 × 10 =
  6. 6.40.71 ÷ 10 =
  7. 7.302.6 × 100 =
  8. 8.327.1 × 1000 =
  9. 9.28.46 × 10 =
  10. 10.17.31 × 1000 =
  11. 11.46.78 ÷ 10 =
  12. 12.147.1 ÷ 100 =
  13. 13.211.1 ÷ 10 =
  14. 14.8.67 ÷ 10 =
  15. 15.29.93 × 10 =
  16. 16.5.54 ÷ 100 =
  17. 17.109.1 ÷ 100 =
  18. 18.168.1 × 1000 =
  19. 19.48.98 ÷ 10 =
  20. 20.63.6 × 10 =
  21. 21.321.1 ÷ 100 =
  22. 22.14.78 × 10 =
  23. 23.249.8 ÷ 1000 =
  24. 24.24.88 ÷ 1000 =
  25. 25.404.1 × 1000 =
  26. 26.31.1 ÷ 10 =
  27. 27.228.5 ÷ 100 =
  28. 28.371.5 × 1000 =
  29. 29.12.01 × 100 =
  30. 30.91.9 ÷ 10 =
  31. 31.33.8 × 10 =
  32. 32.84.4 ÷ 100 =
  33. 33.3.91 × 1000 =
  34. 34.262.1 × 1000 =
  35. 35.55.7 ÷ 10 =
  36. 36.85.2 ÷ 100 =
  37. 37.193.1 ÷ 100 =
  38. 38.5.42 ÷ 1000 =
  39. 39.31.51 × 10 =
  40. 40.44.75 ÷ 10 =

Answer key

  1. 0.0856
  2. 304300
  3. 72.3
  4. 17830
  5. 1206
  6. 4.071
  7. 30260
  8. 327100
  9. 284.6
  10. 17310
  11. 4.678
  12. 1.471
  13. 21.11
  14. 0.867
  15. 299.3
  16. 0.0554
  17. 1.091
  18. 168100
  19. 4.898
  20. 636
  21. 3.211
  22. 147.8
  23. 0.2498
  24. 0.02488
  25. 404100
  26. 3.11
  27. 2.285
  28. 371500
  29. 1201
  30. 9.19
  31. 338
  32. 0.844
  33. 3910
  34. 262100
  35. 5.57
  36. 0.852
  37. 1.931
  38. 0.00542
  39. 315.1
  40. 4.475

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