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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 135 · 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. 1.0.64 × 0.9 =
  2. 2.0.81 × 3.9 =
  3. 3.0.51 × 0.7 =
  4. 4.0.02 × 1.4 =
  5. 5.5.1 × 0.13 =
  6. 6.0.7 × 3.4 =
  7. 7.0.05 × 3.2 =
  8. 8.0.89 × 0.7 =
  9. 9.4.5 × 0.03 =
  10. 10.5.1 × 0.15 =
  11. 11.3.3 × 1.4 =
  12. 12.0.71 × 2.3 =
  13. 13.3.2 × 0.7 =
  14. 14.0.8 × 2.5 =
  15. 15.2.5 × 3.1 =
  16. 16.7.7 × 1.3 =
  17. 17.0.31 × 3.8 =
  18. 18.0.51 × 1.3 =
  19. 19.0.21 × 1.1 =
  20. 20.0.78 × 2.4 =
  21. 21.8.5 × 0.28 =
  22. 22.8.7 × 3.3 =
  23. 23.4.1 × 1.3 =
  24. 24.5.3 × 0.8 =
  25. 25.3.9 × 0.17 =
  26. 26.0.78 × 0.5 =
  27. 27.0.47 × 3.3 =
  28. 28.0.07 × 0.8 =
  29. 29.8.7 × 0.33 =
  30. 30.7.7 × 2.5 =
  31. 31.9.2 × 0.02 =
  32. 32.0.29 × 3.6 =
  33. 33.0.56 × 2.4 =
  34. 34.2.7 × 0.5 =
  35. 35.4.1 × 2.1 =
  36. 36.1.2 × 0.26 =
  37. 37.3.1 × 0.02 =
  38. 38.0.27 × 0.8 =
  39. 39.1.7 × 0.16 =
  40. 40.1.6 × 2.9 =

Answer key

  1. 0.576
  2. 3.159
  3. 0.357
  4. 0.028
  5. 0.663
  6. 2.38
  7. 0.16
  8. 0.623
  9. 0.135
  10. 0.765
  11. 4.62
  12. 1.633
  13. 2.24
  14. 2
  15. 7.75
  16. 10.01
  17. 1.178
  18. 0.663
  19. 0.231
  20. 1.872
  21. 2.38
  22. 28.71
  23. 5.33
  24. 4.24
  25. 0.663
  26. 0.39
  27. 1.551
  28. 0.056
  29. 2.871
  30. 19.25
  31. 0.184
  32. 1.044
  33. 1.344
  34. 1.35
  35. 8.61
  36. 0.312
  37. 0.062
  38. 0.216
  39. 0.272
  40. 4.64

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