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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 512 · 40 questions
TalentJR

The fast method (Count the places): Forget the points and multiply the whole numbers: 2.5 × 1.4 → 25 × 14 = 350. Count the decimal places in both numbers: 1 + 1 = 2. Put the point that many places from the right: 3.50 — then drop the 0 at the end: 3.5.

NameDateTime takenScore ___ / 40
  1. 1.0.84 × 2.1 =
  2. 2.0.31 × 1.3 =
  3. 3.2.7 × 2.6 =
  4. 4.0.02 × 2.3 =
  5. 5.6.8 × 1.4 =
  6. 6.6.6 × 3.6 =
  7. 7.7.5 × 0.9 =
  8. 8.0.93 × 2.5 =
  9. 9.0.78 × 1.1 =
  10. 10.0.25 × 2.3 =
  11. 11.6.5 × 0.21 =
  12. 12.5.1 × 1.1 =
  13. 13.0.41 × 1.1 =
  14. 14.0.19 × 2.2 =
  15. 15.0.72 × 2.2 =
  16. 16.0.95 × 2.4 =
  17. 17.6.1 × 0.04 =
  18. 18.7.6 × 0.9 =
  19. 19.2.8 × 0.11 =
  20. 20.0.79 × 2.1 =
  21. 21.5.5 × 0.22 =
  22. 22.1.8 × 0.38 =
  23. 23.1.5 × 0.8 =
  24. 24.6.4 × 0.6 =
  25. 25.0.91 × 0.3 =
  26. 26.0.32 × 2.9 =
  27. 27.0.89 × 3.6 =
  28. 28.3.2 × 0.7 =
  29. 29.5.5 × 3.9 =
  30. 30.9.7 × 0.17 =
  31. 31.9.8 × 0.3 =
  32. 32.1.4 × 3.6 =
  33. 33.0.81 × 3.5 =
  34. 34.0.91 × 2.1 =
  35. 35.0.27 × 3.8 =
  36. 36.2.9 × 0.33 =
  37. 37.1.1 × 0.31 =
  38. 38.0.71 × 0.2 =
  39. 39.1.1 × 2.3 =
  40. 40.1.6 × 0.9 =

Answer key

  1. 1.764
  2. 0.403
  3. 7.02
  4. 0.046
  5. 9.52
  6. 23.76
  7. 6.75
  8. 2.325
  9. 0.858
  10. 0.575
  11. 1.365
  12. 5.61
  13. 0.451
  14. 0.418
  15. 1.584
  16. 2.28
  17. 0.244
  18. 6.84
  19. 0.308
  20. 1.659
  21. 1.21
  22. 0.684
  23. 1.2
  24. 3.84
  25. 0.273
  26. 0.928
  27. 3.204
  28. 2.24
  29. 21.45
  30. 1.649
  31. 2.94
  32. 5.04
  33. 2.835
  34. 1.911
  35. 1.026
  36. 0.957
  37. 0.341
  38. 0.142
  39. 2.53
  40. 1.44

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