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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 315 · 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. 1.3.9 × 0.3 =
  2. 2.0.29 × 0.3 =
  3. 3.2.4 × 0.08 =
  4. 4.1.7 × 0.35 =
  5. 5.0.38 × 3.3 =
  6. 6.7.6 × 3.8 =
  7. 7.9.7 × 0.02 =
  8. 8.2.9 × 0.09 =
  9. 9.0.67 × 2.1 =
  10. 10.0.12 × 3.3 =
  11. 11.2.4 × 0.25 =
  12. 12.0.87 × 1.2 =
  13. 13.5.7 × 0.14 =
  14. 14.2.7 × 0.06 =
  15. 15.0.26 × 3.4 =
  16. 16.8.6 × 3.8 =
  17. 17.0.97 × 2.5 =
  18. 18.7.4 × 1.7 =
  19. 19.2.8 × 0.18 =
  20. 20.0.79 × 3.9 =
  21. 21.1.7 × 1.8 =
  22. 22.3.6 × 1.4 =
  23. 23.0.71 × 0.3 =
  24. 24.1.1 × 2.8 =
  25. 25.0.44 × 0.5 =
  26. 26.2.8 × 0.21 =
  27. 27.0.94 × 3.9 =
  28. 28.6.8 × 0.33 =
  29. 29.0.82 × 0.4 =
  30. 30.5.4 × 1.3 =
  31. 31.0.66 × 1.6 =
  32. 32.0.28 × 3.4 =
  33. 33.7.9 × 0.21 =
  34. 34.0.45 × 2.7 =
  35. 35.0.27 × 3.5 =
  36. 36.0.6 × 0.9 =
  37. 37.8.2 × 0.11 =
  38. 38.0.29 × 0.5 =
  39. 39.0.52 × 3.1 =
  40. 40.6.1 × 3.4 =

Answer key

  1. 1.17
  2. 0.087
  3. 0.192
  4. 0.595
  5. 1.254
  6. 28.88
  7. 0.194
  8. 0.261
  9. 1.407
  10. 0.396
  11. 0.6
  12. 1.044
  13. 0.798
  14. 0.162
  15. 0.884
  16. 32.68
  17. 2.425
  18. 12.58
  19. 0.504
  20. 3.081
  21. 3.06
  22. 5.04
  23. 0.213
  24. 3.08
  25. 0.22
  26. 0.588
  27. 3.666
  28. 2.244
  29. 0.328
  30. 7.02
  31. 1.056
  32. 0.952
  33. 1.659
  34. 1.215
  35. 0.945
  36. 0.54
  37. 0.902
  38. 0.145
  39. 1.612
  40. 20.74

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