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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 64 · 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 × 2.2 =
  2. 2.5.6 × 0.21 =
  3. 3.0.91 × 3.1 =
  4. 4.6.8 × 0.21 =
  5. 5.9.1 × 2.1 =
  6. 6.0.81 × 3.8 =
  7. 7.4.7 × 3.7 =
  8. 8.4.4 × 0.16 =
  9. 9.0.42 × 2.7 =
  10. 10.0.43 × 2.6 =
  11. 11.0.6 × 0.06 =
  12. 12.5.4 × 0.18 =
  13. 13.8.1 × 3.1 =
  14. 14.8.7 × 0.12 =
  15. 15.1.6 × 0.27 =
  16. 16.1.3 × 0.11 =
  17. 17.0.24 × 3.6 =
  18. 18.7.2 × 0.03 =
  19. 19.3.3 × 0.4 =
  20. 20.0.37 × 0.5 =
  21. 21.7.2 × 3.5 =
  22. 22.0.72 × 3.1 =
  23. 23.0.64 × 3.1 =
  24. 24.0.18 × 1.1 =
  25. 25.0.08 × 2.6 =
  26. 26.0.71 × 3.5 =
  27. 27.2.6 × 0.31 =
  28. 28.0.29 × 1.1 =
  29. 29.4.6 × 3.7 =
  30. 30.5.6 × 0.34 =
  31. 31.0.7 × 3.2 =
  32. 32.0.59 × 3.1 =
  33. 33.0.31 × 1.1 =
  34. 34.0.41 × 3.3 =
  35. 35.2.4 × 0.06 =
  36. 36.0.11 × 0.3 =
  37. 37.0.45 × 0.8 =
  38. 38.8.3 × 0.9 =
  39. 39.0.18 × 0.8 =
  40. 40.2.4 × 0.22 =

Answer key

  1. 1.98
  2. 1.176
  3. 2.821
  4. 1.428
  5. 19.11
  6. 3.078
  7. 17.39
  8. 0.704
  9. 1.134
  10. 1.118
  11. 0.036
  12. 0.972
  13. 25.11
  14. 1.044
  15. 0.432
  16. 0.143
  17. 0.864
  18. 0.216
  19. 1.32
  20. 0.185
  21. 25.2
  22. 2.232
  23. 1.984
  24. 0.198
  25. 0.208
  26. 2.485
  27. 0.806
  28. 0.319
  29. 17.02
  30. 1.904
  31. 2.24
  32. 1.829
  33. 0.341
  34. 1.353
  35. 0.144
  36. 0.033
  37. 0.36
  38. 7.47
  39. 0.144
  40. 0.528

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