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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 111 · 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. 1.3.7 × 0.39 =
  2. 2.0.49 × 2.4 =
  3. 3.9.2 × 3.4 =
  4. 4.0.37 × 1.5 =
  5. 5.6.9 × 0.36 =
  6. 6.9.7 × 2.9 =
  7. 7.8.1 × 0.31 =
  8. 8.0.81 × 0.9 =
  9. 9.6.5 × 3.5 =
  10. 10.3.1 × 1.1 =
  11. 11.1.5 × 0.6 =
  12. 12.0.41 × 2.7 =
  13. 13.0.24 × 2.1 =
  14. 14.7.5 × 1.1 =
  15. 15.1.5 × 2.7 =
  16. 16.4.3 × 0.7 =
  17. 17.0.84 × 0.2 =
  18. 18.0.73 × 0.8 =
  19. 19.8.5 × 0.34 =
  20. 20.8.5 × 0.22 =
  21. 21.1.9 × 0.34 =
  22. 22.0.35 × 1.2 =
  23. 23.4.5 × 0.21 =
  24. 24.6.4 × 0.28 =
  25. 25.0.31 × 1.1 =
  26. 26.0.32 × 1.1 =
  27. 27.0.85 × 3.5 =
  28. 28.5.5 × 0.22 =
  29. 29.4.9 × 1.1 =
  30. 30.0.71 × 1.5 =
  31. 31.4.5 × 0.29 =
  32. 32.9.8 × 3.8 =
  33. 33.7.8 × 0.15 =
  34. 34.0.14 × 0.9 =
  35. 35.0.26 × 0.8 =
  36. 36.7.8 × 0.23 =
  37. 37.0.7 × 0.3 =
  38. 38.9.4 × 1.7 =
  39. 39.3.8 × 1.3 =
  40. 40.2.8 × 1.6 =

Answer key

  1. 1.443
  2. 1.176
  3. 31.28
  4. 0.555
  5. 2.484
  6. 28.13
  7. 2.511
  8. 0.729
  9. 22.75
  10. 3.41
  11. 0.9
  12. 1.107
  13. 0.504
  14. 8.25
  15. 4.05
  16. 3.01
  17. 0.168
  18. 0.584
  19. 2.89
  20. 1.87
  21. 0.646
  22. 0.42
  23. 0.945
  24. 1.792
  25. 0.341
  26. 0.352
  27. 2.975
  28. 1.21
  29. 5.39
  30. 1.065
  31. 1.305
  32. 37.24
  33. 1.17
  34. 0.126
  35. 0.208
  36. 1.794
  37. 0.21
  38. 15.98
  39. 4.94
  40. 4.48

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