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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 470 · 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. 1.7.8 × 0.33 =
  2. 2.7.9 × 3.4 =
  3. 3.0.74 × 3.1 =
  4. 4.1.7 × 2.4 =
  5. 5.5.6 × 0.7 =
  6. 6.7.7 × 0.12 =
  7. 7.0.29 × 3.7 =
  8. 8.2.9 × 3.7 =
  9. 9.0.17 × 1.6 =
  10. 10.0.79 × 0.9 =
  11. 11.2.6 × 0.3 =
  12. 12.0.99 × 1.1 =
  13. 13.0.63 × 1.8 =
  14. 14.0.9 × 2.9 =
  15. 15.0.96 × 2.1 =
  16. 16.3.7 × 0.6 =
  17. 17.8.9 × 1.1 =
  18. 18.6.7 × 3.9 =
  19. 19.0.61 × 1.1 =
  20. 20.0.46 × 0.4 =
  21. 21.0.41 × 1.5 =
  22. 22.0.18 × 1.3 =
  23. 23.0.98 × 1.2 =
  24. 24.2.2 × 0.31 =
  25. 25.4.5 × 0.6 =
  26. 26.3.3 × 1.1 =
  27. 27.0.39 × 1.5 =
  28. 28.0.9 × 2.5 =
  29. 29.0.91 × 2.5 =
  30. 30.5.1 × 0.23 =
  31. 31.0.6 × 2.4 =
  32. 32.0.83 × 3.7 =
  33. 33.8.1 × 2.7 =
  34. 34.0.91 × 0.8 =
  35. 35.3.2 × 2.1 =
  36. 36.9.4 × 0.7 =
  37. 37.1.1 × 0.35 =
  38. 38.0.13 × 3.3 =
  39. 39.0.91 × 0.4 =
  40. 40.0.32 × 1.9 =

Answer key

  1. 2.574
  2. 26.86
  3. 2.294
  4. 4.08
  5. 3.92
  6. 0.924
  7. 1.073
  8. 10.73
  9. 0.272
  10. 0.711
  11. 0.78
  12. 1.089
  13. 1.134
  14. 2.61
  15. 2.016
  16. 2.22
  17. 9.79
  18. 26.13
  19. 0.671
  20. 0.184
  21. 0.615
  22. 0.234
  23. 1.176
  24. 0.682
  25. 2.7
  26. 3.63
  27. 0.585
  28. 2.25
  29. 2.275
  30. 1.173
  31. 1.44
  32. 3.071
  33. 21.87
  34. 0.728
  35. 6.72
  36. 6.58
  37. 0.385
  38. 0.429
  39. 0.364
  40. 0.608

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