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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 660 · 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. 1.0.66 × 2.5 =
  2. 2.5.5 × 0.27 =
  3. 3.9.2 × 0.09 =
  4. 4.0.15 × 1.2 =
  5. 5.0.71 × 2.2 =
  6. 6.0.46 × 0.7 =
  7. 7.0.81 × 3.4 =
  8. 8.0.16 × 2.3 =
  9. 9.0.65 × 1.7 =
  10. 10.0.8 × 0.12 =
  11. 11.0.21 × 0.2 =
  12. 12.0.45 × 1.4 =
  13. 13.0.94 × 0.8 =
  14. 14.0.14 × 0.2 =
  15. 15.9.4 × 1.4 =
  16. 16.8.8 × 0.5 =
  17. 17.0.52 × 1.2 =
  18. 18.0.07 × 3.3 =
  19. 19.1.2 × 0.27 =
  20. 20.0.73 × 0.9 =
  21. 21.0.78 × 2.3 =
  22. 22.0.76 × 3.5 =
  23. 23.0.66 × 2.7 =
  24. 24.0.91 × 2.7 =
  25. 25.0.99 × 2.7 =
  26. 26.2.6 × 0.15 =
  27. 27.0.62 × 2.8 =
  28. 28.9.5 × 2.9 =
  29. 29.0.15 × 1.9 =
  30. 30.0.64 × 2.1 =
  31. 31.0.09 × 3.5 =
  32. 32.3.1 × 0.25 =
  33. 33.8.9 × 0.07 =
  34. 34.4.4 × 0.09 =
  35. 35.9.1 × 0.22 =
  36. 36.0.15 × 1.6 =
  37. 37.0.03 × 0.8 =
  38. 38.1.4 × 0.23 =
  39. 39.9.5 × 2.5 =
  40. 40.0.89 × 0.8 =

Answer key

  1. 1.65
  2. 1.485
  3. 0.828
  4. 0.18
  5. 1.562
  6. 0.322
  7. 2.754
  8. 0.368
  9. 1.105
  10. 0.096
  11. 0.042
  12. 0.63
  13. 0.752
  14. 0.028
  15. 13.16
  16. 4.4
  17. 0.624
  18. 0.231
  19. 0.324
  20. 0.657
  21. 1.794
  22. 2.66
  23. 1.782
  24. 2.457
  25. 2.673
  26. 0.39
  27. 1.736
  28. 27.55
  29. 0.285
  30. 1.344
  31. 0.315
  32. 0.775
  33. 0.623
  34. 0.396
  35. 2.002
  36. 0.24
  37. 0.024
  38. 0.322
  39. 23.75
  40. 0.712

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