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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 728 · 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. 1.0.4 × 1.4 =
  2. 2.0.15 × 2.7 =
  3. 3.0.16 × 3.4 =
  4. 4.6.1 × 2.8 =
  5. 5.0.79 × 0.8 =
  6. 6.0.88 × 1.3 =
  7. 7.1.5 × 0.35 =
  8. 8.2.1 × 2.2 =
  9. 9.0.45 × 3.7 =
  10. 10.5.3 × 2.7 =
  11. 11.5.1 × 0.34 =
  12. 12.7.7 × 0.04 =
  13. 13.7.6 × 1.8 =
  14. 14.4.6 × 0.8 =
  15. 15.8.6 × 3.4 =
  16. 16.8.6 × 1.7 =
  17. 17.0.32 × 2.4 =
  18. 18.8.4 × 0.15 =
  19. 19.0.4 × 3.1 =
  20. 20.0.88 × 3.8 =
  21. 21.1.7 × 0.3 =
  22. 22.0.55 × 1.9 =
  23. 23.0.85 × 1.4 =
  24. 24.2.1 × 2.8 =
  25. 25.1.9 × 2.5 =
  26. 26.0.34 × 2.2 =
  27. 27.1.8 × 3.5 =
  28. 28.0.88 × 3.5 =
  29. 29.1.7 × 2.3 =
  30. 30.0.81 × 0.9 =
  31. 31.0.78 × 0.6 =
  32. 32.0.02 × 2.5 =
  33. 33.2.1 × 0.03 =
  34. 34.0.37 × 1.5 =
  35. 35.0.44 × 2.7 =
  36. 36.0.29 × 2.3 =
  37. 37.0.3 × 0.23 =
  38. 38.8.1 × 0.8 =
  39. 39.7.7 × 0.08 =
  40. 40.0.08 × 1.4 =

Answer key

  1. 0.56
  2. 0.405
  3. 0.544
  4. 17.08
  5. 0.632
  6. 1.144
  7. 0.525
  8. 4.62
  9. 1.665
  10. 14.31
  11. 1.734
  12. 0.308
  13. 13.68
  14. 3.68
  15. 29.24
  16. 14.62
  17. 0.768
  18. 1.26
  19. 1.24
  20. 3.344
  21. 0.51
  22. 1.045
  23. 1.19
  24. 5.88
  25. 4.75
  26. 0.748
  27. 6.3
  28. 3.08
  29. 3.91
  30. 0.729
  31. 0.468
  32. 0.05
  33. 0.063
  34. 0.555
  35. 1.188
  36. 0.667
  37. 0.069
  38. 6.48
  39. 0.616
  40. 0.112

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