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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 438 · 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. 1.0.79 × 0.5 =
  2. 2.3.7 × 2.4 =
  3. 3.0.4 × 0.9 =
  4. 4.0.06 × 3.1 =
  5. 5.0.6 × 0.09 =
  6. 6.1.2 × 0.23 =
  7. 7.9.5 × 2.6 =
  8. 8.0.5 × 0.16 =
  9. 9.0.15 × 3.1 =
  10. 10.0.2 × 3.3 =
  11. 11.1.2 × 1.2 =
  12. 12.0.04 × 1.3 =
  13. 13.1.3 × 1.4 =
  14. 14.0.49 × 0.5 =
  15. 15.0.58 × 2.5 =
  16. 16.0.47 × 3.9 =
  17. 17.0.53 × 1.4 =
  18. 18.1.2 × 1.1 =
  19. 19.1.1 × 0.02 =
  20. 20.5.7 × 0.16 =
  21. 21.7.1 × 3.3 =
  22. 22.0.94 × 2.5 =
  23. 23.7.8 × 0.07 =
  24. 24.0.07 × 0.7 =
  25. 25.1.1 × 2.9 =
  26. 26.7.8 × 3.2 =
  27. 27.9.6 × 0.7 =
  28. 28.0.41 × 3.2 =
  29. 29.0.33 × 0.9 =
  30. 30.4.2 × 0.4 =
  31. 31.0.11 × 3.1 =
  32. 32.2.8 × 3.9 =
  33. 33.9.7 × 3.2 =
  34. 34.8.6 × 0.05 =
  35. 35.0.16 × 2.4 =
  36. 36.9.6 × 0.5 =
  37. 37.6.1 × 0.8 =
  38. 38.9.1 × 0.36 =
  39. 39.0.52 × 3.1 =
  40. 40.0.55 × 3.1 =

Answer key

  1. 0.395
  2. 8.88
  3. 0.36
  4. 0.186
  5. 0.054
  6. 0.276
  7. 24.7
  8. 0.08
  9. 0.465
  10. 0.66
  11. 1.44
  12. 0.052
  13. 1.82
  14. 0.245
  15. 1.45
  16. 1.833
  17. 0.742
  18. 1.32
  19. 0.022
  20. 0.912
  21. 23.43
  22. 2.35
  23. 0.546
  24. 0.049
  25. 3.19
  26. 24.96
  27. 6.72
  28. 1.312
  29. 0.297
  30. 1.68
  31. 0.341
  32. 10.92
  33. 31.04
  34. 0.43
  35. 0.384
  36. 4.8
  37. 4.88
  38. 3.276
  39. 1.612
  40. 1.705

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