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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 113 · 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 × 2.9 =
  2. 2.0.45 × 1.1 =
  3. 3.2.1 × 0.9 =
  4. 4.9.8 × 0.2 =
  5. 5.8.6 × 0.3 =
  6. 6.4.3 × 0.03 =
  7. 7.2.3 × 0.02 =
  8. 8.0.13 × 0.2 =
  9. 9.0.17 × 2.5 =
  10. 10.4.3 × 0.05 =
  11. 11.3.6 × 0.8 =
  12. 12.4.8 × 0.8 =
  13. 13.0.86 × 0.3 =
  14. 14.5.1 × 0.5 =
  15. 15.8.9 × 2.5 =
  16. 16.3.7 × 0.03 =
  17. 17.0.65 × 1.2 =
  18. 18.6.2 × 0.28 =
  19. 19.4.1 × 0.08 =
  20. 20.9.6 × 0.21 =
  21. 21.0.9 × 3.5 =
  22. 22.0.06 × 3.1 =
  23. 23.7.6 × 0.07 =
  24. 24.0.42 × 2.4 =
  25. 25.0.08 × 1.4 =
  26. 26.7.1 × 0.21 =
  27. 27.3.5 × 0.7 =
  28. 28.0.9 × 3.3 =
  29. 29.9.1 × 3.2 =
  30. 30.0.89 × 0.4 =
  31. 31.0.67 × 0.4 =
  32. 32.3.5 × 2.1 =
  33. 33.2.6 × 0.27 =
  34. 34.0.85 × 1.4 =
  35. 35.2.7 × 0.06 =
  36. 36.0.9 × 0.08 =
  37. 37.0.81 × 2.2 =
  38. 38.9.5 × 0.35 =
  39. 39.9.3 × 1.4 =
  40. 40.0.67 × 1.3 =

Answer key

  1. 1.131
  2. 0.495
  3. 1.89
  4. 1.96
  5. 2.58
  6. 0.129
  7. 0.046
  8. 0.026
  9. 0.425
  10. 0.215
  11. 2.88
  12. 3.84
  13. 0.258
  14. 2.55
  15. 22.25
  16. 0.111
  17. 0.78
  18. 1.736
  19. 0.328
  20. 2.016
  21. 3.15
  22. 0.186
  23. 0.532
  24. 1.008
  25. 0.112
  26. 1.491
  27. 2.45
  28. 2.97
  29. 29.12
  30. 0.356
  31. 0.268
  32. 7.35
  33. 0.702
  34. 1.19
  35. 0.162
  36. 0.072
  37. 1.782
  38. 3.325
  39. 13.02
  40. 0.871

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