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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 403 · 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. 1.0.9 × 1.4 =
  2. 2.0.87 × 0.3 =
  3. 3.0.91 × 2.8 =
  4. 4.9.8 × 0.8 =
  5. 5.0.66 × 3.6 =
  6. 6.0.89 × 1.4 =
  7. 7.8.2 × 2.7 =
  8. 8.0.66 × 0.4 =
  9. 9.0.19 × 0.2 =
  10. 10.0.41 × 0.6 =
  11. 11.8.7 × 3.8 =
  12. 12.4.9 × 2.1 =
  13. 13.0.22 × 2.4 =
  14. 14.9.9 × 1.6 =
  15. 15.0.91 × 2.1 =
  16. 16.0.47 × 1.7 =
  17. 17.3.2 × 0.03 =
  18. 18.0.07 × 3.3 =
  19. 19.9.4 × 2.1 =
  20. 20.0.04 × 2.2 =
  21. 21.9.8 × 0.37 =
  22. 22.6.1 × 0.38 =
  23. 23.0.68 × 2.1 =
  24. 24.0.43 × 2.6 =
  25. 25.0.21 × 3.9 =
  26. 26.9.4 × 0.19 =
  27. 27.0.07 × 0.3 =
  28. 28.0.78 × 3.1 =
  29. 29.0.24 × 1.9 =
  30. 30.0.2 × 3.6 =
  31. 31.0.72 × 1.9 =
  32. 32.8.4 × 0.18 =
  33. 33.0.3 × 2.3 =
  34. 34.9.9 × 0.17 =
  35. 35.0.61 × 3.2 =
  36. 36.0.32 × 1.7 =
  37. 37.4.5 × 0.31 =
  38. 38.1.2 × 0.11 =
  39. 39.0.52 × 2.5 =
  40. 40.4.3 × 1.4 =

Answer key

  1. 1.26
  2. 0.261
  3. 2.548
  4. 7.84
  5. 2.376
  6. 1.246
  7. 22.14
  8. 0.264
  9. 0.038
  10. 0.246
  11. 33.06
  12. 10.29
  13. 0.528
  14. 15.84
  15. 1.911
  16. 0.799
  17. 0.096
  18. 0.231
  19. 19.74
  20. 0.088
  21. 3.626
  22. 2.318
  23. 1.428
  24. 1.118
  25. 0.819
  26. 1.786
  27. 0.021
  28. 2.418
  29. 0.456
  30. 0.72
  31. 1.368
  32. 1.512
  33. 0.69
  34. 1.683
  35. 1.952
  36. 0.544
  37. 1.395
  38. 0.132
  39. 1.3
  40. 6.02

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