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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 543 · 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. 1.1.2 × 3.7 =
  2. 2.8.9 × 0.05 =
  3. 3.0.93 × 0.3 =
  4. 4.3.6 × 1.1 =
  5. 5.0.69 × 0.2 =
  6. 6.8.1 × 0.08 =
  7. 7.3.7 × 3.1 =
  8. 8.0.87 × 0.6 =
  9. 9.0.97 × 3.8 =
  10. 10.8.1 × 0.2 =
  11. 11.0.45 × 1.6 =
  12. 12.0.53 × 0.9 =
  13. 13.7.9 × 0.24 =
  14. 14.6.6 × 0.24 =
  15. 15.3.8 × 0.9 =
  16. 16.0.99 × 2.4 =
  17. 17.1.5 × 0.9 =
  18. 18.3.1 × 3.1 =
  19. 19.3.3 × 0.9 =
  20. 20.5.1 × 0.35 =
  21. 21.0.25 × 0.4 =
  22. 22.5.6 × 0.25 =
  23. 23.0.57 × 3.7 =
  24. 24.0.3 × 3.1 =
  25. 25.0.92 × 2.2 =
  26. 26.0.71 × 0.3 =
  27. 27.0.25 × 1.1 =
  28. 28.0.79 × 1.7 =
  29. 29.5.8 × 2.3 =
  30. 30.0.51 × 1.1 =
  31. 31.4.4 × 1.2 =
  32. 32.3.4 × 2.1 =
  33. 33.2.9 × 2.4 =
  34. 34.0.86 × 0.5 =
  35. 35.0.39 × 2.7 =
  36. 36.0.09 × 2.1 =
  37. 37.0.66 × 0.7 =
  38. 38.2.6 × 0.28 =
  39. 39.8.9 × 0.36 =
  40. 40.9.1 × 0.03 =

Answer key

  1. 4.44
  2. 0.445
  3. 0.279
  4. 3.96
  5. 0.138
  6. 0.648
  7. 11.47
  8. 0.522
  9. 3.686
  10. 1.62
  11. 0.72
  12. 0.477
  13. 1.896
  14. 1.584
  15. 3.42
  16. 2.376
  17. 1.35
  18. 9.61
  19. 2.97
  20. 1.785
  21. 0.1
  22. 1.4
  23. 2.109
  24. 0.93
  25. 2.024
  26. 0.213
  27. 0.275
  28. 1.343
  29. 13.34
  30. 0.561
  31. 5.28
  32. 7.14
  33. 6.96
  34. 0.43
  35. 1.053
  36. 0.189
  37. 0.462
  38. 0.728
  39. 3.204
  40. 0.273

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