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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 170 · 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. 1.7.4 × 0.4 =
  2. 2.2.1 × 2.1 =
  3. 3.0.9 × 0.8 =
  4. 4.4.1 × 0.9 =
  5. 5.0.35 × 0.4 =
  6. 6.0.56 × 0.2 =
  7. 7.6.1 × 0.7 =
  8. 8.0.52 × 2.3 =
  9. 9.0.5 × 0.24 =
  10. 10.2.6 × 0.29 =
  11. 11.0.26 × 2.7 =
  12. 12.0.8 × 0.07 =
  13. 13.6.5 × 2.4 =
  14. 14.2.7 × 1.3 =
  15. 15.0.09 × 2.4 =
  16. 16.3.9 × 3.3 =
  17. 17.0.21 × 2.5 =
  18. 18.9.6 × 0.23 =
  19. 19.5.1 × 0.33 =
  20. 20.0.7 × 0.5 =
  21. 21.0.9 × 1.7 =
  22. 22.0.44 × 3.6 =
  23. 23.9.6 × 1.6 =
  24. 24.0.68 × 3.1 =
  25. 25.5.4 × 1.7 =
  26. 26.0.5 × 0.13 =
  27. 27.3.6 × 0.5 =
  28. 28.0.05 × 1.8 =
  29. 29.8.1 × 3.3 =
  30. 30.4.1 × 0.28 =
  31. 31.8.1 × 0.24 =
  32. 32.1.2 × 0.6 =
  33. 33.0.71 × 1.1 =
  34. 34.7.3 × 0.29 =
  35. 35.7.1 × 3.2 =
  36. 36.5.1 × 3.3 =
  37. 37.9.6 × 2.1 =
  38. 38.1.5 × 0.25 =
  39. 39.3.2 × 0.31 =
  40. 40.1.6 × 0.27 =

Answer key

  1. 2.96
  2. 4.41
  3. 0.72
  4. 3.69
  5. 0.14
  6. 0.112
  7. 4.27
  8. 1.196
  9. 0.12
  10. 0.754
  11. 0.702
  12. 0.056
  13. 15.6
  14. 3.51
  15. 0.216
  16. 12.87
  17. 0.525
  18. 2.208
  19. 1.683
  20. 0.35
  21. 1.53
  22. 1.584
  23. 15.36
  24. 2.108
  25. 9.18
  26. 0.065
  27. 1.8
  28. 0.09
  29. 26.73
  30. 1.148
  31. 1.944
  32. 0.72
  33. 0.781
  34. 2.117
  35. 22.72
  36. 16.83
  37. 20.16
  38. 0.375
  39. 0.992
  40. 0.432

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