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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 451 · 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. 1.0.61 × 3.8 =
  2. 2.4.4 × 2.5 =
  3. 3.0.4 × 0.12 =
  4. 4.0.22 × 1.4 =
  5. 5.0.65 × 0.9 =
  6. 6.0.25 × 2.3 =
  7. 7.0.74 × 3.6 =
  8. 8.0.64 × 0.3 =
  9. 9.0.09 × 1.9 =
  10. 10.4.5 × 2.1 =
  11. 11.7.8 × 0.26 =
  12. 12.7.6 × 2.5 =
  13. 13.0.22 × 1.1 =
  14. 14.4.1 × 0.6 =
  15. 15.0.54 × 2.3 =
  16. 16.8.6 × 3.6 =
  17. 17.0.42 × 2.9 =
  18. 18.0.5 × 0.38 =
  19. 19.2.8 × 3.1 =
  20. 20.0.47 × 2.2 =
  21. 21.5.2 × 0.2 =
  22. 22.0.86 × 0.6 =
  23. 23.0.4 × 2.6 =
  24. 24.0.12 × 1.2 =
  25. 25.4.4 × 1.1 =
  26. 26.0.29 × 1.5 =
  27. 27.0.94 × 2.3 =
  28. 28.0.85 × 1.9 =
  29. 29.0.35 × 0.9 =
  30. 30.0.94 × 1.1 =
  31. 31.2.9 × 0.32 =
  32. 32.0.69 × 0.4 =
  33. 33.2.1 × 0.21 =
  34. 34.5.9 × 3.4 =
  35. 35.6.8 × 1.1 =
  36. 36.0.21 × 2.3 =
  37. 37.0.71 × 0.9 =
  38. 38.0.3 × 0.8 =
  39. 39.0.24 × 0.6 =
  40. 40.2.8 × 1.2 =

Answer key

  1. 2.318
  2. 11
  3. 0.048
  4. 0.308
  5. 0.585
  6. 0.575
  7. 2.664
  8. 0.192
  9. 0.171
  10. 9.45
  11. 2.028
  12. 19
  13. 0.242
  14. 2.46
  15. 1.242
  16. 30.96
  17. 1.218
  18. 0.19
  19. 8.68
  20. 1.034
  21. 1.04
  22. 0.516
  23. 1.04
  24. 0.144
  25. 4.84
  26. 0.435
  27. 2.162
  28. 1.615
  29. 0.315
  30. 1.034
  31. 0.928
  32. 0.276
  33. 0.441
  34. 20.06
  35. 7.48
  36. 0.483
  37. 0.639
  38. 0.24
  39. 0.144
  40. 3.36

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