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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 483 · 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. 1.0.39 × 0.8 =
  2. 2.0.78 × 3.9 =
  3. 3.0.11 × 1.5 =
  4. 4.0.25 × 3.6 =
  5. 5.0.54 × 1.7 =
  6. 6.0.07 × 3.8 =
  7. 7.5.8 × 0.4 =
  8. 8.0.16 × 3.4 =
  9. 9.0.71 × 1.6 =
  10. 10.5.7 × 3.2 =
  11. 11.9.3 × 0.31 =
  12. 12.0.73 × 1.2 =
  13. 13.3.1 × 0.3 =
  14. 14.1.3 × 0.21 =
  15. 15.0.05 × 2.3 =
  16. 16.0.7 × 0.3 =
  17. 17.0.43 × 1.9 =
  18. 18.0.31 × 1.8 =
  19. 19.9.8 × 1.7 =
  20. 20.0.09 × 2.1 =
  21. 21.0.47 × 1.1 =
  22. 22.0.28 × 0.6 =
  23. 23.0.61 × 2.1 =
  24. 24.0.53 × 1.7 =
  25. 25.0.6 × 0.04 =
  26. 26.0.51 × 3.7 =
  27. 27.4.6 × 3.8 =
  28. 28.4.1 × 0.39 =
  29. 29.7.7 × 0.31 =
  30. 30.6.9 × 0.09 =
  31. 31.9.3 × 1.2 =
  32. 32.6.9 × 0.23 =
  33. 33.0.15 × 0.2 =
  34. 34.8.7 × 1.2 =
  35. 35.0.18 × 2.8 =
  36. 36.0.27 × 1.9 =
  37. 37.7.2 × 2.3 =
  38. 38.0.37 × 2.5 =
  39. 39.0.05 × 1.3 =
  40. 40.7.2 × 0.33 =

Answer key

  1. 0.312
  2. 3.042
  3. 0.165
  4. 0.9
  5. 0.918
  6. 0.266
  7. 2.32
  8. 0.544
  9. 1.136
  10. 18.24
  11. 2.883
  12. 0.876
  13. 0.93
  14. 0.273
  15. 0.115
  16. 0.21
  17. 0.817
  18. 0.558
  19. 16.66
  20. 0.189
  21. 0.517
  22. 0.168
  23. 1.281
  24. 0.901
  25. 0.024
  26. 1.887
  27. 17.48
  28. 1.599
  29. 2.387
  30. 0.621
  31. 11.16
  32. 1.587
  33. 0.03
  34. 10.44
  35. 0.504
  36. 0.513
  37. 16.56
  38. 0.925
  39. 0.065
  40. 2.376

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