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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 192 · 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. 1.285.1 × 10 =
  2. 2.309.3 × 100 =
  3. 3.44.15 × 100 =
  4. 4.187.5 ÷ 100 =
  5. 5.32.13 × 10 =
  6. 6.5.64 ÷ 10 =
  7. 7.16.43 × 1000 =
  8. 8.201.3 × 10 =
  9. 9.2.21 ÷ 100 =
  10. 10.5.41 × 100 =
  11. 11.135.1 × 10 =
  12. 12.442.8 ÷ 100 =
  13. 13.497.5 × 100 =
  14. 14.28.32 ÷ 1000 =
  15. 15.371.1 × 10 =
  16. 16.162.9 ÷ 1000 =
  17. 17.9.64 ÷ 10 =
  18. 18.297.3 × 1000 =
  19. 19.198.6 × 100 =
  20. 20.401.7 ÷ 10 =
  21. 21.52.6 × 10 =
  22. 22.20.23 × 1000 =
  23. 23.95.2 ÷ 10 =
  24. 24.218.5 × 100 =
  25. 25.15.1 ÷ 1000 =
  26. 26.394.7 × 100 =
  27. 27.123.2 × 1000 =
  28. 28.286.6 × 1000 =
  29. 29.429.3 ÷ 1000 =
  30. 30.201.4 × 100 =
  31. 31.24.54 × 10 =
  32. 32.96.7 × 1000 =
  33. 33.14.95 × 10 =
  34. 34.443.8 × 10 =
  35. 35.37.71 × 10 =
  36. 36.423.9 × 10 =
  37. 37.37.41 × 1000 =
  38. 38.9.62 × 100 =
  39. 39.40.6 × 100 =
  40. 40.341.3 × 100 =

Answer key

  1. 2851
  2. 30930
  3. 4415
  4. 1.875
  5. 321.3
  6. 0.564
  7. 16430
  8. 2013
  9. 0.0221
  10. 541
  11. 1351
  12. 4.428
  13. 49750
  14. 0.02832
  15. 3711
  16. 0.1629
  17. 0.964
  18. 297300
  19. 19860
  20. 40.17
  21. 526
  22. 20230
  23. 9.52
  24. 21850
  25. 0.0151
  26. 39470
  27. 123200
  28. 286600
  29. 0.4293
  30. 20140
  31. 245.4
  32. 96700
  33. 149.5
  34. 4438
  35. 377.1
  36. 4239
  37. 37410
  38. 962
  39. 4060
  40. 34130

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