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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 665 · 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. 1.0.22 × 1.1 =
  2. 2.0.53 × 0.9 =
  3. 3.7.1 × 1.2 =
  4. 4.7.1 × 0.15 =
  5. 5.3.8 × 2.1 =
  6. 6.0.95 × 3.7 =
  7. 7.1.2 × 0.15 =
  8. 8.9.8 × 0.25 =
  9. 9.0.69 × 1.9 =
  10. 10.5.4 × 0.22 =
  11. 11.6.1 × 0.05 =
  12. 12.6.9 × 3.2 =
  13. 13.0.64 × 1.1 =
  14. 14.0.81 × 2.5 =
  15. 15.0.92 × 2.3 =
  16. 16.4.1 × 0.12 =
  17. 17.0.9 × 3.4 =
  18. 18.8.6 × 0.2 =
  19. 19.5.5 × 3.1 =
  20. 20.8.1 × 0.9 =
  21. 21.0.61 × 0.6 =
  22. 22.0.04 × 0.3 =
  23. 23.4.1 × 0.31 =
  24. 24.3.6 × 0.22 =
  25. 25.8.1 × 0.39 =
  26. 26.0.08 × 2.7 =
  27. 27.0.49 × 1.4 =
  28. 28.0.28 × 1.7 =
  29. 29.6.1 × 0.39 =
  30. 30.8.7 × 0.31 =
  31. 31.0.43 × 0.5 =
  32. 32.0.42 × 2.9 =
  33. 33.0.68 × 3.1 =
  34. 34.0.38 × 1.2 =
  35. 35.1.1 × 0.17 =
  36. 36.0.05 × 1.3 =
  37. 37.9.3 × 0.23 =
  38. 38.0.96 × 3.4 =
  39. 39.0.4 × 2.7 =
  40. 40.0.19 × 0.2 =

Answer key

  1. 0.242
  2. 0.477
  3. 8.52
  4. 1.065
  5. 7.98
  6. 3.515
  7. 0.18
  8. 2.45
  9. 1.311
  10. 1.188
  11. 0.305
  12. 22.08
  13. 0.704
  14. 2.025
  15. 2.116
  16. 0.492
  17. 3.06
  18. 1.72
  19. 17.05
  20. 7.29
  21. 0.366
  22. 0.012
  23. 1.271
  24. 0.792
  25. 3.159
  26. 0.216
  27. 0.686
  28. 0.476
  29. 2.379
  30. 2.697
  31. 0.215
  32. 1.218
  33. 2.108
  34. 0.456
  35. 0.187
  36. 0.065
  37. 2.139
  38. 3.264
  39. 1.08
  40. 0.038

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