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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 103 · 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. 1.3.4 × 0.15 =
  2. 2.0.77 × 1.4 =
  3. 3.0.67 × 2.7 =
  4. 4.8.2 × 2.1 =
  5. 5.9.8 × 1.8 =
  6. 6.9.7 × 3.6 =
  7. 7.0.78 × 2.2 =
  8. 8.2.9 × 1.1 =
  9. 9.0.64 × 1.1 =
  10. 10.0.67 × 2.2 =
  11. 11.2.3 × 3.1 =
  12. 12.0.65 × 2.6 =
  13. 13.0.14 × 1.6 =
  14. 14.0.94 × 3.2 =
  15. 15.5.2 × 3.1 =
  16. 16.7.8 × 0.35 =
  17. 17.0.07 × 2.3 =
  18. 18.2.3 × 2.4 =
  19. 19.0.83 × 3.1 =
  20. 20.0.9 × 0.23 =
  21. 21.0.45 × 3.2 =
  22. 22.0.29 × 1.3 =
  23. 23.0.03 × 3.2 =
  24. 24.5.6 × 1.6 =
  25. 25.8.2 × 0.27 =
  26. 26.0.02 × 3.3 =
  27. 27.0.17 × 3.9 =
  28. 28.9.5 × 0.02 =
  29. 29.3.1 × 0.06 =
  30. 30.0.82 × 1.3 =
  31. 31.0.03 × 0.2 =
  32. 32.3.6 × 1.1 =
  33. 33.0.41 × 1.4 =
  34. 34.6.5 × 0.09 =
  35. 35.0.12 × 0.7 =
  36. 36.0.26 × 1.2 =
  37. 37.0.16 × 2.8 =
  38. 38.0.4 × 3.9 =
  39. 39.2.9 × 2.7 =
  40. 40.0.91 × 0.8 =

Answer key

  1. 0.51
  2. 1.078
  3. 1.809
  4. 17.22
  5. 17.64
  6. 34.92
  7. 1.716
  8. 3.19
  9. 0.704
  10. 1.474
  11. 7.13
  12. 1.69
  13. 0.224
  14. 3.008
  15. 16.12
  16. 2.73
  17. 0.161
  18. 5.52
  19. 2.573
  20. 0.207
  21. 1.44
  22. 0.377
  23. 0.096
  24. 8.96
  25. 2.214
  26. 0.066
  27. 0.663
  28. 0.19
  29. 0.186
  30. 1.066
  31. 0.006
  32. 3.96
  33. 0.574
  34. 0.585
  35. 0.084
  36. 0.312
  37. 0.448
  38. 1.56
  39. 7.83
  40. 0.728

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