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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 101 · 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 × 2.4 =
  2. 2.8.4 × 0.12 =
  3. 3.3.3 × 2.1 =
  4. 4.2.7 × 3.1 =
  5. 5.9.7 × 0.8 =
  6. 6.5.7 × 0.9 =
  7. 7.5.9 × 0.02 =
  8. 8.2.1 × 0.24 =
  9. 9.3.6 × 0.5 =
  10. 10.0.23 × 1.6 =
  11. 11.4.9 × 1.1 =
  12. 12.5.4 × 2.1 =
  13. 13.0.06 × 1.1 =
  14. 14.2.1 × 0.06 =
  15. 15.0.36 × 0.7 =
  16. 16.3.9 × 0.02 =
  17. 17.0.18 × 0.9 =
  18. 18.1.4 × 0.21 =
  19. 19.1.5 × 0.2 =
  20. 20.0.71 × 1.6 =
  21. 21.6.1 × 2.1 =
  22. 22.4.4 × 1.1 =
  23. 23.2.1 × 0.37 =
  24. 24.0.39 × 0.6 =
  25. 25.0.39 × 0.6 =
  26. 26.6.6 × 1.3 =
  27. 27.0.41 × 1.5 =
  28. 28.0.5 × 2.1 =
  29. 29.6.9 × 2.7 =
  30. 30.0.05 × 2.2 =
  31. 31.8.8 × 0.11 =
  32. 32.0.84 × 3.6 =
  33. 33.0.49 × 1.1 =
  34. 34.0.71 × 1.5 =
  35. 35.0.46 × 1.2 =
  36. 36.0.71 × 1.5 =
  37. 37.8.9 × 0.32 =
  38. 38.7.8 × 2.1 =
  39. 39.2.3 × 0.21 =
  40. 40.0.74 × 0.4 =

Answer key

  1. 21.84
  2. 1.008
  3. 6.93
  4. 8.37
  5. 7.76
  6. 5.13
  7. 0.118
  8. 0.504
  9. 1.8
  10. 0.368
  11. 5.39
  12. 11.34
  13. 0.066
  14. 0.126
  15. 0.252
  16. 0.078
  17. 0.162
  18. 0.294
  19. 0.3
  20. 1.136
  21. 12.81
  22. 4.84
  23. 0.777
  24. 0.234
  25. 0.234
  26. 8.58
  27. 0.615
  28. 1.05
  29. 18.63
  30. 0.11
  31. 0.968
  32. 3.024
  33. 0.539
  34. 1.065
  35. 0.552
  36. 1.065
  37. 2.848
  38. 16.38
  39. 0.483
  40. 0.296

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