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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 341 · 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. 1.2.1 × 0.9 =
  2. 2.7.9 × 0.38 =
  3. 3.8.9 × 0.02 =
  4. 4.0.43 × 0.7 =
  5. 5.0.16 × 1.1 =
  6. 6.0.81 × 0.4 =
  7. 7.1.5 × 3.3 =
  8. 8.4.8 × 0.07 =
  9. 9.9.3 × 3.1 =
  10. 10.0.76 × 1.1 =
  11. 11.0.77 × 2.2 =
  12. 12.0.97 × 1.3 =
  13. 13.0.6 × 0.7 =
  14. 14.0.61 × 2.3 =
  15. 15.0.05 × 0.2 =
  16. 16.0.41 × 1.2 =
  17. 17.0.94 × 1.6 =
  18. 18.0.28 × 3.2 =
  19. 19.0.97 × 3.4 =
  20. 20.0.02 × 0.4 =
  21. 21.4.6 × 0.08 =
  22. 22.9.9 × 1.9 =
  23. 23.9.9 × 0.17 =
  24. 24.0.29 × 3.5 =
  25. 25.8.9 × 1.1 =
  26. 26.0.16 × 0.9 =
  27. 27.0.91 × 3.3 =
  28. 28.0.28 × 1.2 =
  29. 29.0.18 × 3.5 =
  30. 30.2.1 × 3.3 =
  31. 31.6.1 × 2.1 =
  32. 32.0.3 × 0.31 =
  33. 33.0.77 × 3.1 =
  34. 34.0.13 × 1.5 =
  35. 35.2.7 × 3.6 =
  36. 36.1.9 × 1.9 =
  37. 37.4.1 × 0.21 =
  38. 38.3.3 × 0.21 =
  39. 39.0.11 × 3.1 =
  40. 40.0.54 × 3.1 =

Answer key

  1. 1.89
  2. 3.002
  3. 0.178
  4. 0.301
  5. 0.176
  6. 0.324
  7. 4.95
  8. 0.336
  9. 28.83
  10. 0.836
  11. 1.694
  12. 1.261
  13. 0.42
  14. 1.403
  15. 0.01
  16. 0.492
  17. 1.504
  18. 0.896
  19. 3.298
  20. 0.008
  21. 0.368
  22. 18.81
  23. 1.683
  24. 1.015
  25. 9.79
  26. 0.144
  27. 3.003
  28. 0.336
  29. 0.63
  30. 6.93
  31. 12.81
  32. 0.093
  33. 2.387
  34. 0.195
  35. 9.72
  36. 3.61
  37. 0.861
  38. 0.693
  39. 0.341
  40. 1.674

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