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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 153 · 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. 1.4.1 × 0.21 =
  2. 2.1.9 × 2.3 =
  3. 3.2.8 × 1.8 =
  4. 4.2.6 × 0.9 =
  5. 5.0.31 × 1.3 =
  6. 6.0.21 × 2.3 =
  7. 7.2.4 × 0.04 =
  8. 8.0.03 × 0.9 =
  9. 9.0.31 × 2.6 =
  10. 10.0.99 × 0.9 =
  11. 11.0.89 × 3.2 =
  12. 12.0.68 × 3.1 =
  13. 13.0.91 × 3.2 =
  14. 14.1.3 × 0.6 =
  15. 15.0.3 × 2.6 =
  16. 16.6.6 × 2.9 =
  17. 17.7.9 × 2.9 =
  18. 18.0.81 × 0.2 =
  19. 19.7.5 × 3.8 =
  20. 20.6.8 × 0.24 =
  21. 21.0.4 × 1.8 =
  22. 22.6.5 × 1.9 =
  23. 23.0.83 × 1.2 =
  24. 24.8.9 × 0.37 =
  25. 25.0.83 × 3.4 =
  26. 26.2.8 × 0.33 =
  27. 27.8.1 × 3.5 =
  28. 28.0.69 × 1.4 =
  29. 29.5.1 × 0.5 =
  30. 30.1.1 × 0.03 =
  31. 31.0.07 × 0.2 =
  32. 32.3.1 × 0.6 =
  33. 33.4.8 × 0.39 =
  34. 34.8.3 × 0.06 =
  35. 35.6.5 × 2.8 =
  36. 36.0.13 × 1.6 =
  37. 37.8.1 × 0.31 =
  38. 38.0.28 × 1.1 =
  39. 39.8.4 × 3.3 =
  40. 40.9.7 × 0.38 =

Answer key

  1. 0.861
  2. 4.37
  3. 5.04
  4. 2.34
  5. 0.403
  6. 0.483
  7. 0.096
  8. 0.027
  9. 0.806
  10. 0.891
  11. 2.848
  12. 2.108
  13. 2.912
  14. 0.78
  15. 0.78
  16. 19.14
  17. 22.91
  18. 0.162
  19. 28.5
  20. 1.632
  21. 0.72
  22. 12.35
  23. 0.996
  24. 3.293
  25. 2.822
  26. 0.924
  27. 28.35
  28. 0.966
  29. 2.55
  30. 0.033
  31. 0.014
  32. 1.86
  33. 1.872
  34. 0.498
  35. 18.2
  36. 0.208
  37. 2.511
  38. 0.308
  39. 27.72
  40. 3.686

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