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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 612 · 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. 1.0.72 × 1.8 =
  2. 2.0.09 × 3.1 =
  3. 3.9.8 × 0.6 =
  4. 4.0.02 × 0.6 =
  5. 5.4.5 × 0.09 =
  6. 6.0.71 × 2.7 =
  7. 7.0.31 × 2.9 =
  8. 8.0.71 × 0.3 =
  9. 9.4.7 × 1.9 =
  10. 10.3.1 × 0.9 =
  11. 11.0.85 × 3.7 =
  12. 12.2.6 × 0.3 =
  13. 13.3.7 × 0.31 =
  14. 14.0.08 × 2.5 =
  15. 15.0.61 × 1.7 =
  16. 16.8.5 × 0.04 =
  17. 17.4.3 × 0.31 =
  18. 18.0.02 × 3.5 =
  19. 19.1.3 × 0.07 =
  20. 20.8.2 × 0.39 =
  21. 21.5.5 × 0.09 =
  22. 22.3.5 × 0.32 =
  23. 23.0.35 × 1.1 =
  24. 24.8.2 × 0.16 =
  25. 25.4.7 × 0.21 =
  26. 26.5.1 × 2.5 =
  27. 27.0.57 × 1.2 =
  28. 28.0.26 × 2.9 =
  29. 29.7.2 × 0.5 =
  30. 30.0.74 × 0.7 =
  31. 31.0.97 × 0.8 =
  32. 32.8.8 × 0.7 =
  33. 33.0.57 × 0.5 =
  34. 34.0.51 × 2.7 =
  35. 35.0.12 × 2.4 =
  36. 36.7.7 × 1.9 =
  37. 37.0.61 × 2.2 =
  38. 38.7.6 × 0.6 =
  39. 39.0.94 × 1.8 =
  40. 40.3.5 × 0.9 =

Answer key

  1. 1.296
  2. 0.279
  3. 5.88
  4. 0.012
  5. 0.405
  6. 1.917
  7. 0.899
  8. 0.213
  9. 8.93
  10. 2.79
  11. 3.145
  12. 0.78
  13. 1.147
  14. 0.2
  15. 1.037
  16. 0.34
  17. 1.333
  18. 0.07
  19. 0.091
  20. 3.198
  21. 0.495
  22. 1.12
  23. 0.385
  24. 1.312
  25. 0.987
  26. 12.75
  27. 0.684
  28. 0.754
  29. 3.6
  30. 0.518
  31. 0.776
  32. 6.16
  33. 0.285
  34. 1.377
  35. 0.288
  36. 14.63
  37. 1.342
  38. 4.56
  39. 1.692
  40. 3.15

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