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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 725 · 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 × 0.39 =
  2. 2.1.4 × 1.2 =
  3. 3.0.72 × 1.7 =
  4. 4.3.2 × 0.06 =
  5. 5.8.8 × 1.1 =
  6. 6.3.2 × 0.04 =
  7. 7.4.9 × 1.3 =
  8. 8.0.41 × 3.5 =
  9. 9.7.3 × 0.36 =
  10. 10.0.21 × 0.6 =
  11. 11.4.2 × 3.5 =
  12. 12.5.5 × 2.8 =
  13. 13.0.3 × 0.26 =
  14. 14.0.13 × 1.2 =
  15. 15.3.9 × 0.25 =
  16. 16.4.7 × 0.33 =
  17. 17.0.49 × 0.5 =
  18. 18.2.3 × 3.9 =
  19. 19.1.7 × 0.29 =
  20. 20.0.31 × 3.5 =
  21. 21.9.8 × 0.21 =
  22. 22.6.9 × 0.06 =
  23. 23.0.78 × 0.6 =
  24. 24.8.4 × 0.26 =
  25. 25.0.66 × 1.1 =
  26. 26.0.51 × 1.2 =
  27. 27.0.36 × 2.6 =
  28. 28.0.53 × 1.4 =
  29. 29.0.46 × 1.1 =
  30. 30.3.5 × 0.39 =
  31. 31.0.64 × 1.9 =
  32. 32.5.6 × 1.1 =
  33. 33.0.21 × 2.8 =
  34. 34.8.1 × 3.1 =
  35. 35.0.89 × 1.1 =
  36. 36.8.9 × 0.31 =
  37. 37.0.94 × 3.5 =
  38. 38.8.3 × 0.8 =
  39. 39.2.9 × 0.02 =
  40. 40.0.55 × 0.4 =

Answer key

  1. 1.131
  2. 1.68
  3. 1.224
  4. 0.192
  5. 9.68
  6. 0.128
  7. 6.37
  8. 1.435
  9. 2.628
  10. 0.126
  11. 14.7
  12. 15.4
  13. 0.078
  14. 0.156
  15. 0.975
  16. 1.551
  17. 0.245
  18. 8.97
  19. 0.493
  20. 1.085
  21. 2.058
  22. 0.414
  23. 0.468
  24. 2.184
  25. 0.726
  26. 0.612
  27. 0.936
  28. 0.742
  29. 0.506
  30. 1.365
  31. 1.216
  32. 6.16
  33. 0.588
  34. 25.11
  35. 0.979
  36. 2.759
  37. 3.29
  38. 6.64
  39. 0.058
  40. 0.22

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