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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 139 · 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. 1.0.67 × 2.1 =
  2. 2.0.14 × 3.8 =
  3. 3.7.7 × 0.6 =
  4. 4.2.8 × 2.1 =
  5. 5.2.5 × 1.2 =
  6. 6.0.03 × 1.1 =
  7. 7.2.6 × 0.39 =
  8. 8.0.13 × 2.5 =
  9. 9.3.5 × 1.1 =
  10. 10.0.64 × 2.8 =
  11. 11.0.76 × 3.3 =
  12. 12.0.52 × 3.7 =
  13. 13.0.89 × 3.5 =
  14. 14.0.32 × 3.1 =
  15. 15.0.39 × 3.9 =
  16. 16.0.24 × 1.1 =
  17. 17.0.79 × 2.1 =
  18. 18.0.59 × 0.8 =
  19. 19.0.56 × 2.4 =
  20. 20.5.1 × 3.2 =
  21. 21.6.8 × 3.2 =
  22. 22.7.4 × 0.36 =
  23. 23.0.52 × 1.6 =
  24. 24.0.29 × 2.4 =
  25. 25.0.32 × 2.6 =
  26. 26.2.1 × 1.8 =
  27. 27.2.6 × 2.7 =
  28. 28.1.2 × 0.35 =
  29. 29.2.1 × 1.8 =
  30. 30.5.4 × 0.25 =
  31. 31.6.2 × 0.21 =
  32. 32.0.77 × 0.9 =
  33. 33.0.4 × 0.32 =
  34. 34.4.4 × 3.3 =
  35. 35.0.22 × 3.4 =
  36. 36.5.1 × 0.3 =
  37. 37.0.19 × 0.7 =
  38. 38.0.38 × 1.6 =
  39. 39.2.1 × 0.15 =
  40. 40.8.5 × 0.4 =

Answer key

  1. 1.407
  2. 0.532
  3. 4.62
  4. 5.88
  5. 3
  6. 0.033
  7. 1.014
  8. 0.325
  9. 3.85
  10. 1.792
  11. 2.508
  12. 1.924
  13. 3.115
  14. 0.992
  15. 1.521
  16. 0.264
  17. 1.659
  18. 0.472
  19. 1.344
  20. 16.32
  21. 21.76
  22. 2.664
  23. 0.832
  24. 0.696
  25. 0.832
  26. 3.78
  27. 7.02
  28. 0.42
  29. 3.78
  30. 1.35
  31. 1.302
  32. 0.693
  33. 0.128
  34. 14.52
  35. 0.748
  36. 1.53
  37. 0.133
  38. 0.608
  39. 0.315
  40. 3.4

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