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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 670 · 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. 1.0.02 × 0.8 =
  2. 2.7.3 × 1.1 =
  3. 3.0.31 × 3.8 =
  4. 4.0.86 × 1.5 =
  5. 5.0.23 × 1.9 =
  6. 6.1.1 × 0.11 =
  7. 7.0.54 × 3.5 =
  8. 8.0.25 × 2.2 =
  9. 9.0.95 × 0.2 =
  10. 10.2.9 × 0.28 =
  11. 11.0.48 × 3.2 =
  12. 12.5.9 × 0.13 =
  13. 13.0.16 × 2.3 =
  14. 14.0.45 × 3.4 =
  15. 15.7.3 × 1.7 =
  16. 16.2.2 × 0.02 =
  17. 17.0.14 × 1.5 =
  18. 18.8.9 × 3.6 =
  19. 19.5.2 × 1.3 =
  20. 20.4.4 × 0.13 =
  21. 21.7.4 × 1.5 =
  22. 22.0.33 × 2.4 =
  23. 23.0.28 × 1.1 =
  24. 24.0.55 × 2.1 =
  25. 25.2.2 × 0.34 =
  26. 26.0.5 × 0.34 =
  27. 27.9.1 × 0.28 =
  28. 28.2.4 × 0.24 =
  29. 29.3.3 × 2.5 =
  30. 30.0.11 × 2.1 =
  31. 31.0.76 × 1.4 =
  32. 32.0.07 × 0.9 =
  33. 33.2.9 × 0.31 =
  34. 34.0.3 × 0.7 =
  35. 35.0.71 × 0.6 =
  36. 36.2.7 × 0.11 =
  37. 37.4.1 × 1.2 =
  38. 38.2.6 × 0.4 =
  39. 39.0.25 × 2.1 =
  40. 40.0.39 × 3.7 =

Answer key

  1. 0.016
  2. 8.03
  3. 1.178
  4. 1.29
  5. 0.437
  6. 0.121
  7. 1.89
  8. 0.55
  9. 0.19
  10. 0.812
  11. 1.536
  12. 0.767
  13. 0.368
  14. 1.53
  15. 12.41
  16. 0.044
  17. 0.21
  18. 32.04
  19. 6.76
  20. 0.572
  21. 11.1
  22. 0.792
  23. 0.308
  24. 1.155
  25. 0.748
  26. 0.17
  27. 2.548
  28. 0.576
  29. 8.25
  30. 0.231
  31. 1.064
  32. 0.063
  33. 0.899
  34. 0.21
  35. 0.426
  36. 0.297
  37. 4.92
  38. 1.04
  39. 0.525
  40. 1.443

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