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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 21 · 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. 1.9.8 × 0.22 =
  2. 2.0.32 × 3.2 =
  3. 3.5.6 × 1.7 =
  4. 4.0.51 × 0.8 =
  5. 5.2.9 × 0.24 =
  6. 6.4.3 × 0.6 =
  7. 7.0.11 × 3.8 =
  8. 8.1.7 × 0.15 =
  9. 9.9.9 × 1.2 =
  10. 10.0.61 × 0.9 =
  11. 11.0.8 × 0.07 =
  12. 12.4.1 × 0.11 =
  13. 13.0.47 × 2.3 =
  14. 14.1.1 × 2.8 =
  15. 15.0.21 × 0.7 =
  16. 16.0.91 × 3.6 =
  17. 17.0.78 × 2.1 =
  18. 18.0.14 × 1.6 =
  19. 19.0.93 × 0.5 =
  20. 20.0.59 × 2.7 =
  21. 21.0.74 × 3.6 =
  22. 22.7.1 × 1.1 =
  23. 23.8.2 × 0.04 =
  24. 24.2.3 × 0.26 =
  25. 25.0.97 × 1.4 =
  26. 26.4.7 × 2.7 =
  27. 27.8.5 × 0.31 =
  28. 28.0.87 × 3.7 =
  29. 29.2.6 × 0.6 =
  30. 30.0.97 × 0.4 =
  31. 31.5.4 × 2.7 =
  32. 32.8.2 × 0.17 =
  33. 33.0.05 × 3.6 =
  34. 34.0.07 × 2.2 =
  35. 35.0.86 × 1.4 =
  36. 36.6.1 × 1.6 =
  37. 37.0.19 × 0.4 =
  38. 38.9.5 × 3.8 =
  39. 39.9.6 × 0.17 =
  40. 40.0.77 × 0.9 =

Answer key

  1. 2.156
  2. 1.024
  3. 9.52
  4. 0.408
  5. 0.696
  6. 2.58
  7. 0.418
  8. 0.255
  9. 11.88
  10. 0.549
  11. 0.056
  12. 0.451
  13. 1.081
  14. 3.08
  15. 0.147
  16. 3.276
  17. 1.638
  18. 0.224
  19. 0.465
  20. 1.593
  21. 2.664
  22. 7.81
  23. 0.328
  24. 0.598
  25. 1.358
  26. 12.69
  27. 2.635
  28. 3.219
  29. 1.56
  30. 0.388
  31. 14.58
  32. 1.394
  33. 0.18
  34. 0.154
  35. 1.204
  36. 9.76
  37. 0.076
  38. 36.1
  39. 1.632
  40. 0.693

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