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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 109 · 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. 1.0.91 × 3.8 =
  2. 2.0.18 × 0.6 =
  3. 3.4.6 × 0.04 =
  4. 4.2.3 × 1.9 =
  5. 5.7.2 × 0.31 =
  6. 6.0.13 × 1.4 =
  7. 7.0.48 × 3.5 =
  8. 8.8.2 × 0.31 =
  9. 9.0.81 × 0.8 =
  10. 10.3.5 × 0.33 =
  11. 11.0.47 × 1.4 =
  12. 12.0.38 × 1.5 =
  13. 13.0.58 × 0.3 =
  14. 14.0.73 × 2.3 =
  15. 15.4.4 × 2.6 =
  16. 16.1.6 × 0.07 =
  17. 17.8.4 × 2.4 =
  18. 18.0.57 × 2.4 =
  19. 19.4.2 × 0.7 =
  20. 20.3.5 × 1.1 =
  21. 21.5.5 × 0.07 =
  22. 22.0.76 × 2.1 =
  23. 23.8.6 × 0.11 =
  24. 24.0.62 × 0.5 =
  25. 25.0.16 × 0.7 =
  26. 26.1.2 × 0.35 =
  27. 27.0.46 × 0.2 =
  28. 28.6.8 × 0.11 =
  29. 29.8.3 × 1.6 =
  30. 30.0.11 × 3.6 =
  31. 31.2.5 × 0.24 =
  32. 32.0.53 × 3.9 =
  33. 33.0.65 × 3.1 =
  34. 34.9.3 × 0.28 =
  35. 35.2.1 × 2.1 =
  36. 36.0.71 × 1.2 =
  37. 37.8.7 × 3.4 =
  38. 38.0.82 × 2.9 =
  39. 39.8.8 × 3.1 =
  40. 40.9.4 × 1.1 =

Answer key

  1. 3.458
  2. 0.108
  3. 0.184
  4. 4.37
  5. 2.232
  6. 0.182
  7. 1.68
  8. 2.542
  9. 0.648
  10. 1.155
  11. 0.658
  12. 0.57
  13. 0.174
  14. 1.679
  15. 11.44
  16. 0.112
  17. 20.16
  18. 1.368
  19. 2.94
  20. 3.85
  21. 0.385
  22. 1.596
  23. 0.946
  24. 0.31
  25. 0.112
  26. 0.42
  27. 0.092
  28. 0.748
  29. 13.28
  30. 0.396
  31. 0.6
  32. 2.067
  33. 2.015
  34. 2.604
  35. 4.41
  36. 0.852
  37. 29.58
  38. 2.378
  39. 27.28
  40. 10.34

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