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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 121 · 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. 1.0.41 × 0.4 =
  2. 2.8.8 × 3.4 =
  3. 3.0.72 × 0.4 =
  4. 4.9.3 × 0.5 =
  5. 5.0.87 × 0.8 =
  6. 6.0.51 × 2.1 =
  7. 7.0.58 × 3.4 =
  8. 8.0.56 × 3.6 =
  9. 9.0.3 × 0.04 =
  10. 10.4.6 × 0.03 =
  11. 11.1.1 × 0.25 =
  12. 12.9.1 × 0.12 =
  13. 13.0.76 × 1.5 =
  14. 14.9.6 × 0.19 =
  15. 15.0.82 × 1.4 =
  16. 16.6.3 × 3.1 =
  17. 17.9.1 × 3.6 =
  18. 18.0.19 × 0.6 =
  19. 19.1.2 × 3.5 =
  20. 20.0.47 × 3.7 =
  21. 21.0.2 × 0.22 =
  22. 22.0.71 × 3.8 =
  23. 23.6.4 × 3.9 =
  24. 24.4.5 × 1.8 =
  25. 25.0.27 × 0.3 =
  26. 26.0.13 × 2.7 =
  27. 27.6.8 × 2.4 =
  28. 28.3.1 × 2.9 =
  29. 29.9.7 × 0.02 =
  30. 30.0.97 × 0.6 =
  31. 31.0.4 × 2.8 =
  32. 32.1.2 × 2.1 =
  33. 33.0.7 × 2.1 =
  34. 34.0.26 × 3.4 =
  35. 35.5.1 × 2.4 =
  36. 36.4.1 × 1.6 =
  37. 37.0.44 × 1.1 =
  38. 38.0.89 × 1.1 =
  39. 39.2.1 × 0.11 =
  40. 40.0.3 × 1.2 =

Answer key

  1. 0.164
  2. 29.92
  3. 0.288
  4. 4.65
  5. 0.696
  6. 1.071
  7. 1.972
  8. 2.016
  9. 0.012
  10. 0.138
  11. 0.275
  12. 1.092
  13. 1.14
  14. 1.824
  15. 1.148
  16. 19.53
  17. 32.76
  18. 0.114
  19. 4.2
  20. 1.739
  21. 0.044
  22. 2.698
  23. 24.96
  24. 8.1
  25. 0.081
  26. 0.351
  27. 16.32
  28. 8.99
  29. 0.194
  30. 0.582
  31. 1.12
  32. 2.52
  33. 1.47
  34. 0.884
  35. 12.24
  36. 6.56
  37. 0.484
  38. 0.979
  39. 0.231
  40. 0.36

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