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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 223 · 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. 1.1.2 × 3.8 =
  2. 2.0.7 × 0.21 =
  3. 3.0.88 × 3.2 =
  4. 4.9.1 × 0.11 =
  5. 5.0.8 × 0.18 =
  6. 6.9.9 × 0.34 =
  7. 7.0.61 × 2.3 =
  8. 8.8.4 × 2.1 =
  9. 9.2.8 × 0.11 =
  10. 10.0.99 × 0.9 =
  11. 11.0.16 × 3.2 =
  12. 12.0.34 × 0.2 =
  13. 13.0.22 × 1.1 =
  14. 14.0.9 × 2.6 =
  15. 15.4.3 × 1.1 =
  16. 16.0.85 × 3.6 =
  17. 17.9.4 × 3.7 =
  18. 18.0.83 × 0.6 =
  19. 19.0.83 × 2.1 =
  20. 20.0.27 × 2.4 =
  21. 21.0.02 × 2.2 =
  22. 22.0.09 × 0.4 =
  23. 23.5.3 × 0.14 =
  24. 24.8.4 × 0.27 =
  25. 25.7.5 × 0.18 =
  26. 26.0.11 × 2.3 =
  27. 27.0.02 × 3.2 =
  28. 28.1.9 × 0.31 =
  29. 29.0.31 × 3.7 =
  30. 30.9.5 × 0.18 =
  31. 31.7.3 × 1.8 =
  32. 32.2.5 × 2.8 =
  33. 33.0.07 × 1.3 =
  34. 34.3.3 × 0.37 =
  35. 35.0.45 × 1.1 =
  36. 36.6.4 × 0.21 =
  37. 37.4.6 × 0.34 =
  38. 38.0.48 × 2.3 =
  39. 39.0.12 × 2.6 =
  40. 40.0.56 × 2.6 =

Answer key

  1. 4.56
  2. 0.147
  3. 2.816
  4. 1.001
  5. 0.144
  6. 3.366
  7. 1.403
  8. 17.64
  9. 0.308
  10. 0.891
  11. 0.512
  12. 0.068
  13. 0.242
  14. 2.34
  15. 4.73
  16. 3.06
  17. 34.78
  18. 0.498
  19. 1.743
  20. 0.648
  21. 0.044
  22. 0.036
  23. 0.742
  24. 2.268
  25. 1.35
  26. 0.253
  27. 0.064
  28. 0.589
  29. 1.147
  30. 1.71
  31. 13.14
  32. 7
  33. 0.091
  34. 1.221
  35. 0.495
  36. 1.344
  37. 1.564
  38. 1.104
  39. 0.312
  40. 1.456

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