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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 54 · 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. 1.0.4 × 3.1 =
  2. 2.7.6 × 0.39 =
  3. 3.4.6 × 0.15 =
  4. 4.0.5 × 0.33 =
  5. 5.0.49 × 1.6 =
  6. 6.5.1 × 0.21 =
  7. 7.0.2 × 1.6 =
  8. 8.8.1 × 0.28 =
  9. 9.0.02 × 0.6 =
  10. 10.0.31 × 2.6 =
  11. 11.3.6 × 3.8 =
  12. 12.7.8 × 0.3 =
  13. 13.0.91 × 2.6 =
  14. 14.0.25 × 3.8 =
  15. 15.0.27 × 2.1 =
  16. 16.9.7 × 0.27 =
  17. 17.7.6 × 0.33 =
  18. 18.5.9 × 0.19 =
  19. 19.0.12 × 0.4 =
  20. 20.6.6 × 3.9 =
  21. 21.5.4 × 0.6 =
  22. 22.9.5 × 0.4 =
  23. 23.0.72 × 1.9 =
  24. 24.9.2 × 2.3 =
  25. 25.0.45 × 3.4 =
  26. 26.9.6 × 0.28 =
  27. 27.0.47 × 1.1 =
  28. 28.3.2 × 0.07 =
  29. 29.4.2 × 2.1 =
  30. 30.1.6 × 0.25 =
  31. 31.0.09 × 0.3 =
  32. 32.7.4 × 0.03 =
  33. 33.6.8 × 0.24 =
  34. 34.0.89 × 2.1 =
  35. 35.0.3 × 2.9 =
  36. 36.8.6 × 0.05 =
  37. 37.0.71 × 3.1 =
  38. 38.9.7 × 0.35 =
  39. 39.1.9 × 0.3 =
  40. 40.0.51 × 0.9 =

Answer key

  1. 1.24
  2. 2.964
  3. 0.69
  4. 0.165
  5. 0.784
  6. 1.071
  7. 0.32
  8. 2.268
  9. 0.012
  10. 0.806
  11. 13.68
  12. 2.34
  13. 2.366
  14. 0.95
  15. 0.567
  16. 2.619
  17. 2.508
  18. 1.121
  19. 0.048
  20. 25.74
  21. 3.24
  22. 3.8
  23. 1.368
  24. 21.16
  25. 1.53
  26. 2.688
  27. 0.517
  28. 0.224
  29. 8.82
  30. 0.4
  31. 0.027
  32. 0.222
  33. 1.632
  34. 1.869
  35. 0.87
  36. 0.43
  37. 2.201
  38. 3.395
  39. 0.57
  40. 0.459

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