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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 521 · 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. 1.0.32 × 1.8 =
  2. 2.7.5 × 3.8 =
  3. 3.0.8 × 0.5 =
  4. 4.0.22 × 1.3 =
  5. 5.7.8 × 2.2 =
  6. 6.0.23 × 3.8 =
  7. 7.2.6 × 2.1 =
  8. 8.0.09 × 3.7 =
  9. 9.0.13 × 1.6 =
  10. 10.0.68 × 1.5 =
  11. 11.9.9 × 3.1 =
  12. 12.5.9 × 0.27 =
  13. 13.3.1 × 0.4 =
  14. 14.0.11 × 1.8 =
  15. 15.0.79 × 3.2 =
  16. 16.0.82 × 1.5 =
  17. 17.0.15 × 2.4 =
  18. 18.0.31 × 3.1 =
  19. 19.0.7 × 2.6 =
  20. 20.0.91 × 3.5 =
  21. 21.0.66 × 0.5 =
  22. 22.9.3 × 3.3 =
  23. 23.8.9 × 0.04 =
  24. 24.0.6 × 1.2 =
  25. 25.6.5 × 3.4 =
  26. 26.0.46 × 0.9 =
  27. 27.7.5 × 0.03 =
  28. 28.3.9 × 0.02 =
  29. 29.6.6 × 1.8 =
  30. 30.0.46 × 2.6 =
  31. 31.4.1 × 0.19 =
  32. 32.6.1 × 0.29 =
  33. 33.0.07 × 0.2 =
  34. 34.0.83 × 2.1 =
  35. 35.0.41 × 1.1 =
  36. 36.0.79 × 3.2 =
  37. 37.0.81 × 1.3 =
  38. 38.0.62 × 1.9 =
  39. 39.0.41 × 1.1 =
  40. 40.3.2 × 0.9 =

Answer key

  1. 0.576
  2. 28.5
  3. 0.4
  4. 0.286
  5. 17.16
  6. 0.874
  7. 5.46
  8. 0.333
  9. 0.208
  10. 1.02
  11. 30.69
  12. 1.593
  13. 1.24
  14. 0.198
  15. 2.528
  16. 1.23
  17. 0.36
  18. 0.961
  19. 1.82
  20. 3.185
  21. 0.33
  22. 30.69
  23. 0.356
  24. 0.72
  25. 22.1
  26. 0.414
  27. 0.225
  28. 0.078
  29. 11.88
  30. 1.196
  31. 0.779
  32. 1.769
  33. 0.014
  34. 1.743
  35. 0.451
  36. 2.528
  37. 1.053
  38. 1.178
  39. 0.451
  40. 2.88

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