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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 542 · 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. 1.8.3 × 0.8 =
  2. 2.6.5 × 0.16 =
  3. 3.1.9 × 0.4 =
  4. 4.0.04 × 1.8 =
  5. 5.1.1 × 0.24 =
  6. 6.0.15 × 1.2 =
  7. 7.0.41 × 3.8 =
  8. 8.0.99 × 1.2 =
  9. 9.0.33 × 2.8 =
  10. 10.0.04 × 2.2 =
  11. 11.0.85 × 3.7 =
  12. 12.8.5 × 0.05 =
  13. 13.8.4 × 1.8 =
  14. 14.0.11 × 3.8 =
  15. 15.5.7 × 0.38 =
  16. 16.0.88 × 1.1 =
  17. 17.2.1 × 0.3 =
  18. 18.1.9 × 2.2 =
  19. 19.4.1 × 3.8 =
  20. 20.0.72 × 3.1 =
  21. 21.0.8 × 2.3 =
  22. 22.0.99 × 1.3 =
  23. 23.3.9 × 3.1 =
  24. 24.6.3 × 3.1 =
  25. 25.7.5 × 0.11 =
  26. 26.6.5 × 3.4 =
  27. 27.0.6 × 0.11 =
  28. 28.0.64 × 0.9 =
  29. 29.0.81 × 2.1 =
  30. 30.0.71 × 1.5 =
  31. 31.9.8 × 0.35 =
  32. 32.5.1 × 0.36 =
  33. 33.2.6 × 0.18 =
  34. 34.0.52 × 3.6 =
  35. 35.3.9 × 1.7 =
  36. 36.9.3 × 3.1 =
  37. 37.9.5 × 0.7 =
  38. 38.0.2 × 3.7 =
  39. 39.0.81 × 1.1 =
  40. 40.0.52 × 2.6 =

Answer key

  1. 6.64
  2. 1.04
  3. 0.76
  4. 0.072
  5. 0.264
  6. 0.18
  7. 1.558
  8. 1.188
  9. 0.924
  10. 0.088
  11. 3.145
  12. 0.425
  13. 15.12
  14. 0.418
  15. 2.166
  16. 0.968
  17. 0.63
  18. 4.18
  19. 15.58
  20. 2.232
  21. 1.84
  22. 1.287
  23. 12.09
  24. 19.53
  25. 0.825
  26. 22.1
  27. 0.066
  28. 0.576
  29. 1.701
  30. 1.065
  31. 3.43
  32. 1.836
  33. 0.468
  34. 1.872
  35. 6.63
  36. 28.83
  37. 6.65
  38. 0.74
  39. 0.891
  40. 1.352

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