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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 199 · 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. 1.2.9 × 0.12 =
  2. 2.3.7 × 0.27 =
  3. 3.9.1 × 0.29 =
  4. 4.7.1 × 2.1 =
  5. 5.7.1 × 0.16 =
  6. 6.0.24 × 1.7 =
  7. 7.0.85 × 0.5 =
  8. 8.2.1 × 0.9 =
  9. 9.0.29 × 1.9 =
  10. 10.0.29 × 1.6 =
  11. 11.6.4 × 0.03 =
  12. 12.0.46 × 3.1 =
  13. 13.1.6 × 0.22 =
  14. 14.5.1 × 2.3 =
  15. 15.0.74 × 0.5 =
  16. 16.1.8 × 0.32 =
  17. 17.0.06 × 2.9 =
  18. 18.8.4 × 1.6 =
  19. 19.0.08 × 1.9 =
  20. 20.0.6 × 3.5 =
  21. 21.0.16 × 0.4 =
  22. 22.4.5 × 1.1 =
  23. 23.0.65 × 0.6 =
  24. 24.0.18 × 3.9 =
  25. 25.0.19 × 3.1 =
  26. 26.0.27 × 1.6 =
  27. 27.8.6 × 1.1 =
  28. 28.0.6 × 0.22 =
  29. 29.1.5 × 0.9 =
  30. 30.0.57 × 3.8 =
  31. 31.7.7 × 1.4 =
  32. 32.0.37 × 0.8 =
  33. 33.0.31 × 3.4 =
  34. 34.2.4 × 0.9 =
  35. 35.0.05 × 1.4 =
  36. 36.2.4 × 3.9 =
  37. 37.0.75 × 3.1 =
  38. 38.0.61 × 1.9 =
  39. 39.2.1 × 2.6 =
  40. 40.8.5 × 0.07 =

Answer key

  1. 0.348
  2. 0.999
  3. 2.639
  4. 14.91
  5. 1.136
  6. 0.408
  7. 0.425
  8. 1.89
  9. 0.551
  10. 0.464
  11. 0.192
  12. 1.426
  13. 0.352
  14. 11.73
  15. 0.37
  16. 0.576
  17. 0.174
  18. 13.44
  19. 0.152
  20. 2.1
  21. 0.064
  22. 4.95
  23. 0.39
  24. 0.702
  25. 0.589
  26. 0.432
  27. 9.46
  28. 0.132
  29. 1.35
  30. 2.166
  31. 10.78
  32. 0.296
  33. 1.054
  34. 2.16
  35. 0.07
  36. 9.36
  37. 2.325
  38. 1.159
  39. 5.46
  40. 0.595

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