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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 370 · 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. 1.0.17 × 1.8 =
  2. 2.0.91 × 1.5 =
  3. 3.8.8 × 2.3 =
  4. 4.1.9 × 3.9 =
  5. 5.0.44 × 3.9 =
  6. 6.4.3 × 0.11 =
  7. 7.6.2 × 0.21 =
  8. 8.6.6 × 3.1 =
  9. 9.0.91 × 1.7 =
  10. 10.0.5 × 1.5 =
  11. 11.0.22 × 1.4 =
  12. 12.4.1 × 1.1 =
  13. 13.3.3 × 0.13 =
  14. 14.8.1 × 3.1 =
  15. 15.4.7 × 1.1 =
  16. 16.8.1 × 0.4 =
  17. 17.0.81 × 3.1 =
  18. 18.2.8 × 1.7 =
  19. 19.5.5 × 0.9 =
  20. 20.0.3 × 0.31 =
  21. 21.0.34 × 2.1 =
  22. 22.3.4 × 3.2 =
  23. 23.0.35 × 0.8 =
  24. 24.1.1 × 1.3 =
  25. 25.5.6 × 1.7 =
  26. 26.2.9 × 0.21 =
  27. 27.0.06 × 1.3 =
  28. 28.0.5 × 0.22 =
  29. 29.3.2 × 3.5 =
  30. 30.0.11 × 2.1 =
  31. 31.0.38 × 0.2 =
  32. 32.0.71 × 0.6 =
  33. 33.9.1 × 2.3 =
  34. 34.0.79 × 0.4 =
  35. 35.0.08 × 0.7 =
  36. 36.2.5 × 3.9 =
  37. 37.0.05 × 2.5 =
  38. 38.6.7 × 0.02 =
  39. 39.8.5 × 2.8 =
  40. 40.7.2 × 0.26 =

Answer key

  1. 0.306
  2. 1.365
  3. 20.24
  4. 7.41
  5. 1.716
  6. 0.473
  7. 1.302
  8. 20.46
  9. 1.547
  10. 0.75
  11. 0.308
  12. 4.51
  13. 0.429
  14. 25.11
  15. 5.17
  16. 3.24
  17. 2.511
  18. 4.76
  19. 4.95
  20. 0.093
  21. 0.714
  22. 10.88
  23. 0.28
  24. 1.43
  25. 9.52
  26. 0.609
  27. 0.078
  28. 0.11
  29. 11.2
  30. 0.231
  31. 0.076
  32. 0.426
  33. 20.93
  34. 0.316
  35. 0.056
  36. 9.75
  37. 0.125
  38. 0.134
  39. 23.8
  40. 1.872

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