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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 345 · 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. 1.8.8 × 2.4 =
  2. 2.3.4 × 0.14 =
  3. 3.9.7 × 0.36 =
  4. 4.0.66 × 0.2 =
  5. 5.2.1 × 2.8 =
  6. 6.0.38 × 2.1 =
  7. 7.2.3 × 3.6 =
  8. 8.0.74 × 3.8 =
  9. 9.0.71 × 0.7 =
  10. 10.0.4 × 0.38 =
  11. 11.0.48 × 2.4 =
  12. 12.0.92 × 3.5 =
  13. 13.4.6 × 2.5 =
  14. 14.1.2 × 3.7 =
  15. 15.0.5 × 2.9 =
  16. 16.2.8 × 2.1 =
  17. 17.0.51 × 2.6 =
  18. 18.3.5 × 0.4 =
  19. 19.4.5 × 0.05 =
  20. 20.0.74 × 3.9 =
  21. 21.3.7 × 0.16 =
  22. 22.4.6 × 0.15 =
  23. 23.0.74 × 0.3 =
  24. 24.0.71 × 3.3 =
  25. 25.7.6 × 3.8 =
  26. 26.8.3 × 1.1 =
  27. 27.2.8 × 0.16 =
  28. 28.0.41 × 1.1 =
  29. 29.0.16 × 1.7 =
  30. 30.6.1 × 0.12 =
  31. 31.7.1 × 0.22 =
  32. 32.5.1 × 2.8 =
  33. 33.0.16 × 1.7 =
  34. 34.0.29 × 0.5 =
  35. 35.1.3 × 0.39 =
  36. 36.0.99 × 3.8 =
  37. 37.5.6 × 0.2 =
  38. 38.8.5 × 0.39 =
  39. 39.4.2 × 0.05 =
  40. 40.0.08 × 1.4 =

Answer key

  1. 21.12
  2. 0.476
  3. 3.492
  4. 0.132
  5. 5.88
  6. 0.798
  7. 8.28
  8. 2.812
  9. 0.497
  10. 0.152
  11. 1.152
  12. 3.22
  13. 11.5
  14. 4.44
  15. 1.45
  16. 5.88
  17. 1.326
  18. 1.4
  19. 0.225
  20. 2.886
  21. 0.592
  22. 0.69
  23. 0.222
  24. 2.343
  25. 28.88
  26. 9.13
  27. 0.448
  28. 0.451
  29. 0.272
  30. 0.732
  31. 1.562
  32. 14.28
  33. 0.272
  34. 0.145
  35. 0.507
  36. 3.762
  37. 1.12
  38. 3.315
  39. 0.21
  40. 0.112

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