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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 601 · 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. 1.0.51 × 1.1 =
  2. 2.0.94 × 1.2 =
  3. 3.2.2 × 3.8 =
  4. 4.9.4 × 1.6 =
  5. 5.0.58 × 0.5 =
  6. 6.0.92 × 3.2 =
  7. 7.2.9 × 0.14 =
  8. 8.0.72 × 3.9 =
  9. 9.0.82 × 2.2 =
  10. 10.0.8 × 0.3 =
  11. 11.0.74 × 1.9 =
  12. 12.9.9 × 3.1 =
  13. 13.4.5 × 0.12 =
  14. 14.9.9 × 0.15 =
  15. 15.0.06 × 2.3 =
  16. 16.0.25 × 0.8 =
  17. 17.0.68 × 1.3 =
  18. 18.0.72 × 2.3 =
  19. 19.2.1 × 0.09 =
  20. 20.4.4 × 0.33 =
  21. 21.0.67 × 1.1 =
  22. 22.2.2 × 3.4 =
  23. 23.0.66 × 2.2 =
  24. 24.5.1 × 3.1 =
  25. 25.0.49 × 2.7 =
  26. 26.0.43 × 2.7 =
  27. 27.0.39 × 3.1 =
  28. 28.0.9 × 2.6 =
  29. 29.4.3 × 0.27 =
  30. 30.0.05 × 0.9 =
  31. 31.0.83 × 2.9 =
  32. 32.0.15 × 2.3 =
  33. 33.0.31 × 2.1 =
  34. 34.5.8 × 2.4 =
  35. 35.0.19 × 0.6 =
  36. 36.0.92 × 3.5 =
  37. 37.9.3 × 1.1 =
  38. 38.0.22 × 1.5 =
  39. 39.7.1 × 0.6 =
  40. 40.1.1 × 0.31 =

Answer key

  1. 0.561
  2. 1.128
  3. 8.36
  4. 15.04
  5. 0.29
  6. 2.944
  7. 0.406
  8. 2.808
  9. 1.804
  10. 0.24
  11. 1.406
  12. 30.69
  13. 0.54
  14. 1.485
  15. 0.138
  16. 0.2
  17. 0.884
  18. 1.656
  19. 0.189
  20. 1.452
  21. 0.737
  22. 7.48
  23. 1.452
  24. 15.81
  25. 1.323
  26. 1.161
  27. 1.209
  28. 2.34
  29. 1.161
  30. 0.045
  31. 2.407
  32. 0.345
  33. 0.651
  34. 13.92
  35. 0.114
  36. 3.22
  37. 10.23
  38. 0.33
  39. 4.26
  40. 0.341

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