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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 311 · 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. 1.0.39 × 0.9 =
  2. 2.3.1 × 1.1 =
  3. 3.0.7 × 0.31 =
  4. 4.7.5 × 1.8 =
  5. 5.4.9 × 0.3 =
  6. 6.0.35 × 2.3 =
  7. 7.9.9 × 0.23 =
  8. 8.0.98 × 2.9 =
  9. 9.3.3 × 1.1 =
  10. 10.0.28 × 3.8 =
  11. 11.9.9 × 1.1 =
  12. 12.4.9 × 3.9 =
  13. 13.3.2 × 3.2 =
  14. 14.0.57 × 2.1 =
  15. 15.2.7 × 1.2 =
  16. 16.7.1 × 3.5 =
  17. 17.2.1 × 1.5 =
  18. 18.0.04 × 1.4 =
  19. 19.0.81 × 1.5 =
  20. 20.3.3 × 0.13 =
  21. 21.0.17 × 2.3 =
  22. 22.3.1 × 0.21 =
  23. 23.9.9 × 0.13 =
  24. 24.2.8 × 2.9 =
  25. 25.4.1 × 0.05 =
  26. 26.6.1 × 0.18 =
  27. 27.6.1 × 0.17 =
  28. 28.1.3 × 1.9 =
  29. 29.0.66 × 3.3 =
  30. 30.0.78 × 3.3 =
  31. 31.0.45 × 0.2 =
  32. 32.0.3 × 0.12 =
  33. 33.6.3 × 1.5 =
  34. 34.5.1 × 0.7 =
  35. 35.2.6 × 0.32 =
  36. 36.1.8 × 2.8 =
  37. 37.0.76 × 1.1 =
  38. 38.0.21 × 0.6 =
  39. 39.5.9 × 1.6 =
  40. 40.0.91 × 0.3 =

Answer key

  1. 0.351
  2. 3.41
  3. 0.217
  4. 13.5
  5. 1.47
  6. 0.805
  7. 2.277
  8. 2.842
  9. 3.63
  10. 1.064
  11. 10.89
  12. 19.11
  13. 10.24
  14. 1.197
  15. 3.24
  16. 24.85
  17. 3.15
  18. 0.056
  19. 1.215
  20. 0.429
  21. 0.391
  22. 0.651
  23. 1.287
  24. 8.12
  25. 0.205
  26. 1.098
  27. 1.037
  28. 2.47
  29. 2.178
  30. 2.574
  31. 0.09
  32. 0.036
  33. 9.45
  34. 3.57
  35. 0.832
  36. 5.04
  37. 0.836
  38. 0.126
  39. 9.44
  40. 0.273

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