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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 28 · 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. 1.0.94 × 3.2 =
  2. 2.7.9 × 3.1 =
  3. 3.0.51 × 2.3 =
  4. 4.0.12 × 0.3 =
  5. 5.0.42 × 2.5 =
  6. 6.1.1 × 2.7 =
  7. 7.2.4 × 0.23 =
  8. 8.6.1 × 2.1 =
  9. 9.9.1 × 0.4 =
  10. 10.2.7 × 3.2 =
  11. 11.0.77 × 3.6 =
  12. 12.6.7 × 0.16 =
  13. 13.3.5 × 1.2 =
  14. 14.0.2 × 2.4 =
  15. 15.4.1 × 0.15 =
  16. 16.1.3 × 0.14 =
  17. 17.0.31 × 1.1 =
  18. 18.0.22 × 3.9 =
  19. 19.9.4 × 3.8 =
  20. 20.8.1 × 0.03 =
  21. 21.4.1 × 1.6 =
  22. 22.0.11 × 1.1 =
  23. 23.0.73 × 1.1 =
  24. 24.0.72 × 2.5 =
  25. 25.9.3 × 2.9 =
  26. 26.0.05 × 1.2 =
  27. 27.2.4 × 0.18 =
  28. 28.0.44 × 0.4 =
  29. 29.2.6 × 0.2 =
  30. 30.3.9 × 0.02 =
  31. 31.8.1 × 3.9 =
  32. 32.8.6 × 0.39 =
  33. 33.0.52 × 0.2 =
  34. 34.0.13 × 0.3 =
  35. 35.9.9 × 0.07 =
  36. 36.2.6 × 1.9 =
  37. 37.5.3 × 0.33 =
  38. 38.0.69 × 2.9 =
  39. 39.0.94 × 3.9 =
  40. 40.0.96 × 2.3 =

Answer key

  1. 3.008
  2. 24.49
  3. 1.173
  4. 0.036
  5. 1.05
  6. 2.97
  7. 0.552
  8. 12.81
  9. 3.64
  10. 8.64
  11. 2.772
  12. 1.072
  13. 4.2
  14. 0.48
  15. 0.615
  16. 0.182
  17. 0.341
  18. 0.858
  19. 35.72
  20. 0.243
  21. 6.56
  22. 0.121
  23. 0.803
  24. 1.8
  25. 26.97
  26. 0.06
  27. 0.432
  28. 0.176
  29. 0.52
  30. 0.078
  31. 31.59
  32. 3.354
  33. 0.104
  34. 0.039
  35. 0.693
  36. 4.94
  37. 1.749
  38. 2.001
  39. 3.666
  40. 2.208

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