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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 397 · 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. 1.9.1 × 0.25 =
  2. 2.5.4 × 0.04 =
  3. 3.0.3 × 3.1 =
  4. 4.0.51 × 0.7 =
  5. 5.0.31 × 2.1 =
  6. 6.7.6 × 1.2 =
  7. 7.0.89 × 0.4 =
  8. 8.0.6 × 3.1 =
  9. 9.0.91 × 1.4 =
  10. 10.6.9 × 1.5 =
  11. 11.8.3 × 2.6 =
  12. 12.1.7 × 2.7 =
  13. 13.0.05 × 0.8 =
  14. 14.0.31 × 2.4 =
  15. 15.9.2 × 3.4 =
  16. 16.1.6 × 0.24 =
  17. 17.0.51 × 1.4 =
  18. 18.4.5 × 0.11 =
  19. 19.8.9 × 2.1 =
  20. 20.4.1 × 0.11 =
  21. 21.5.2 × 2.8 =
  22. 22.0.63 × 2.4 =
  23. 23.8.3 × 0.5 =
  24. 24.4.5 × 1.1 =
  25. 25.9.9 × 0.31 =
  26. 26.2.1 × 0.39 =
  27. 27.5.8 × 0.16 =
  28. 28.0.21 × 3.7 =
  29. 29.0.18 × 3.3 =
  30. 30.7.3 × 3.8 =
  31. 31.0.81 × 0.9 =
  32. 32.0.16 × 0.3 =
  33. 33.0.8 × 0.12 =
  34. 34.0.31 × 0.7 =
  35. 35.9.7 × 0.22 =
  36. 36.5.2 × 1.5 =
  37. 37.3.5 × 0.23 =
  38. 38.4.2 × 0.7 =
  39. 39.0.78 × 0.9 =
  40. 40.0.5 × 0.25 =

Answer key

  1. 2.275
  2. 0.216
  3. 0.93
  4. 0.357
  5. 0.651
  6. 9.12
  7. 0.356
  8. 1.86
  9. 1.274
  10. 10.35
  11. 21.58
  12. 4.59
  13. 0.04
  14. 0.744
  15. 31.28
  16. 0.384
  17. 0.714
  18. 0.495
  19. 18.69
  20. 0.451
  21. 14.56
  22. 1.512
  23. 4.15
  24. 4.95
  25. 3.069
  26. 0.819
  27. 0.928
  28. 0.777
  29. 0.594
  30. 27.74
  31. 0.729
  32. 0.048
  33. 0.096
  34. 0.217
  35. 2.134
  36. 7.8
  37. 0.805
  38. 2.94
  39. 0.702
  40. 0.125

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