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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 599 · 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. 1.0.52 × 0.8 =
  2. 2.4.1 × 0.09 =
  3. 3.8.2 × 2.3 =
  4. 4.7.6 × 0.28 =
  5. 5.7.9 × 0.17 =
  6. 6.6.8 × 3.5 =
  7. 7.0.51 × 1.3 =
  8. 8.2.7 × 0.5 =
  9. 9.0.81 × 3.2 =
  10. 10.6.5 × 1.3 =
  11. 11.0.87 × 3.6 =
  12. 12.0.15 × 3.8 =
  13. 13.9.6 × 0.03 =
  14. 14.3.7 × 3.1 =
  15. 15.3.6 × 1.1 =
  16. 16.1.3 × 0.24 =
  17. 17.0.99 × 3.6 =
  18. 18.0.5 × 3.7 =
  19. 19.6.1 × 0.9 =
  20. 20.8.1 × 3.8 =
  21. 21.0.51 × 0.6 =
  22. 22.0.81 × 1.3 =
  23. 23.8.6 × 0.36 =
  24. 24.9.6 × 3.1 =
  25. 25.0.88 × 2.6 =
  26. 26.0.65 × 1.9 =
  27. 27.0.12 × 1.8 =
  28. 28.3.7 × 0.25 =
  29. 29.2.4 × 3.1 =
  30. 30.1.6 × 0.19 =
  31. 31.0.41 × 0.2 =
  32. 32.0.35 × 2.5 =
  33. 33.2.5 × 0.07 =
  34. 34.9.8 × 0.09 =
  35. 35.0.47 × 1.3 =
  36. 36.3.1 × 0.36 =
  37. 37.1.7 × 0.6 =
  38. 38.6.7 × 2.5 =
  39. 39.1.4 × 0.3 =
  40. 40.0.03 × 0.9 =

Answer key

  1. 0.416
  2. 0.369
  3. 18.86
  4. 2.128
  5. 1.343
  6. 23.8
  7. 0.663
  8. 1.35
  9. 2.592
  10. 8.45
  11. 3.132
  12. 0.57
  13. 0.288
  14. 11.47
  15. 3.96
  16. 0.312
  17. 3.564
  18. 1.85
  19. 5.49
  20. 30.78
  21. 0.306
  22. 1.053
  23. 3.096
  24. 29.76
  25. 2.288
  26. 1.235
  27. 0.216
  28. 0.925
  29. 7.44
  30. 0.304
  31. 0.082
  32. 0.875
  33. 0.175
  34. 0.882
  35. 0.611
  36. 1.116
  37. 1.02
  38. 16.75
  39. 0.42
  40. 0.027

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