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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 18 · 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. 1.3.1 × 0.38 =
  2. 2.7.8 × 1.3 =
  3. 3.8.4 × 3.4 =
  4. 4.1.4 × 2.5 =
  5. 5.1.5 × 1.4 =
  6. 6.2.4 × 0.17 =
  7. 7.1.8 × 1.5 =
  8. 8.0.35 × 0.4 =
  9. 9.8.9 × 1.6 =
  10. 10.8.1 × 3.8 =
  11. 11.0.31 × 0.4 =
  12. 12.0.71 × 1.8 =
  13. 13.4.5 × 0.13 =
  14. 14.2.2 × 3.2 =
  15. 15.7.2 × 1.9 =
  16. 16.0.8 × 0.15 =
  17. 17.0.68 × 2.7 =
  18. 18.9.3 × 1.3 =
  19. 19.0.57 × 2.7 =
  20. 20.3.1 × 1.2 =
  21. 21.0.08 × 0.9 =
  22. 22.0.13 × 3.9 =
  23. 23.2.1 × 0.32 =
  24. 24.8.3 × 0.04 =
  25. 25.5.5 × 0.38 =
  26. 26.9.1 × 0.8 =
  27. 27.0.3 × 0.22 =
  28. 28.0.21 × 2.7 =
  29. 29.0.15 × 3.4 =
  30. 30.0.98 × 2.2 =
  31. 31.0.36 × 0.4 =
  32. 32.0.26 × 1.5 =
  33. 33.0.7 × 1.4 =
  34. 34.0.15 × 0.2 =
  35. 35.0.24 × 3.3 =
  36. 36.0.81 × 3.5 =
  37. 37.9.2 × 0.6 =
  38. 38.0.81 × 3.3 =
  39. 39.0.21 × 2.1 =
  40. 40.0.29 × 2.6 =

Answer key

  1. 1.178
  2. 10.14
  3. 28.56
  4. 3.5
  5. 2.1
  6. 0.408
  7. 2.7
  8. 0.14
  9. 14.24
  10. 30.78
  11. 0.124
  12. 1.278
  13. 0.585
  14. 7.04
  15. 13.68
  16. 0.12
  17. 1.836
  18. 12.09
  19. 1.539
  20. 3.72
  21. 0.072
  22. 0.507
  23. 0.672
  24. 0.332
  25. 2.09
  26. 7.28
  27. 0.066
  28. 0.567
  29. 0.51
  30. 2.156
  31. 0.144
  32. 0.39
  33. 0.98
  34. 0.03
  35. 0.792
  36. 2.835
  37. 5.52
  38. 2.673
  39. 0.441
  40. 0.754

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