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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 434 · 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. 1.0.16 × 2.1 =
  2. 2.5.1 × 3.9 =
  3. 3.0.32 × 1.1 =
  4. 4.6.1 × 0.31 =
  5. 5.0.55 × 3.7 =
  6. 6.8.7 × 0.13 =
  7. 7.0.51 × 3.1 =
  8. 8.0.31 × 2.6 =
  9. 9.5.4 × 0.06 =
  10. 10.0.53 × 3.9 =
  11. 11.0.17 × 2.1 =
  12. 12.5.5 × 3.3 =
  13. 13.0.93 × 2.7 =
  14. 14.0.21 × 1.1 =
  15. 15.1.5 × 0.12 =
  16. 16.0.03 × 0.4 =
  17. 17.0.78 × 2.8 =
  18. 18.8.7 × 1.6 =
  19. 19.0.83 × 1.9 =
  20. 20.1.7 × 1.1 =
  21. 21.3.5 × 3.1 =
  22. 22.9.3 × 0.26 =
  23. 23.0.26 × 2.6 =
  24. 24.6.1 × 3.7 =
  25. 25.5.7 × 3.1 =
  26. 26.5.4 × 0.07 =
  27. 27.0.27 × 2.5 =
  28. 28.1.3 × 3.5 =
  29. 29.7.4 × 0.18 =
  30. 30.4.1 × 1.6 =
  31. 31.0.91 × 0.2 =
  32. 32.0.42 × 3.4 =
  33. 33.7.1 × 0.03 =
  34. 34.0.08 × 3.3 =
  35. 35.0.18 × 3.5 =
  36. 36.0.29 × 1.1 =
  37. 37.7.5 × 0.13 =
  38. 38.0.97 × 2.8 =
  39. 39.9.6 × 1.6 =
  40. 40.0.58 × 3.4 =

Answer key

  1. 0.336
  2. 19.89
  3. 0.352
  4. 1.891
  5. 2.035
  6. 1.131
  7. 1.581
  8. 0.806
  9. 0.324
  10. 2.067
  11. 0.357
  12. 18.15
  13. 2.511
  14. 0.231
  15. 0.18
  16. 0.012
  17. 2.184
  18. 13.92
  19. 1.577
  20. 1.87
  21. 10.85
  22. 2.418
  23. 0.676
  24. 22.57
  25. 17.67
  26. 0.378
  27. 0.675
  28. 4.55
  29. 1.332
  30. 6.56
  31. 0.182
  32. 1.428
  33. 0.213
  34. 0.264
  35. 0.63
  36. 0.319
  37. 0.975
  38. 2.716
  39. 15.36
  40. 1.972

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