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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 344 · 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. 1.0.88 × 1.9 =
  2. 2.3.1 × 3.9 =
  3. 3.0.47 × 2.2 =
  4. 4.5.4 × 0.8 =
  5. 5.0.81 × 1.1 =
  6. 6.4.4 × 0.29 =
  7. 7.0.71 × 0.4 =
  8. 8.0.83 × 2.1 =
  9. 9.4.8 × 0.39 =
  10. 10.9.3 × 3.1 =
  11. 11.0.93 × 3.1 =
  12. 12.0.07 × 0.7 =
  13. 13.9.8 × 0.31 =
  14. 14.7.1 × 0.35 =
  15. 15.0.62 × 0.9 =
  16. 16.0.36 × 0.9 =
  17. 17.0.91 × 3.5 =
  18. 18.0.24 × 1.9 =
  19. 19.0.98 × 1.9 =
  20. 20.9.8 × 3.1 =
  21. 21.7.6 × 1.3 =
  22. 22.0.89 × 1.1 =
  23. 23.0.26 × 0.7 =
  24. 24.2.1 × 0.02 =
  25. 25.0.28 × 1.4 =
  26. 26.0.39 × 2.8 =
  27. 27.0.33 × 2.2 =
  28. 28.0.73 × 0.9 =
  29. 29.1.4 × 0.11 =
  30. 30.5.1 × 3.3 =
  31. 31.0.03 × 0.7 =
  32. 32.0.38 × 0.7 =
  33. 33.7.8 × 2.9 =
  34. 34.0.42 × 0.7 =
  35. 35.0.31 × 2.1 =
  36. 36.0.02 × 2.6 =
  37. 37.7.1 × 0.24 =
  38. 38.2.2 × 2.1 =
  39. 39.2.1 × 2.5 =
  40. 40.8.8 × 0.37 =

Answer key

  1. 1.672
  2. 12.09
  3. 1.034
  4. 4.32
  5. 0.891
  6. 1.276
  7. 0.284
  8. 1.743
  9. 1.872
  10. 28.83
  11. 2.883
  12. 0.049
  13. 3.038
  14. 2.485
  15. 0.558
  16. 0.324
  17. 3.185
  18. 0.456
  19. 1.862
  20. 30.38
  21. 9.88
  22. 0.979
  23. 0.182
  24. 0.042
  25. 0.392
  26. 1.092
  27. 0.726
  28. 0.657
  29. 0.154
  30. 16.83
  31. 0.021
  32. 0.266
  33. 22.62
  34. 0.294
  35. 0.651
  36. 0.052
  37. 1.704
  38. 4.62
  39. 5.25
  40. 3.256

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