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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 910 · 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. 1.0.81 × 3.9 =
  2. 2.5.1 × 0.11 =
  3. 3.8.4 × 0.07 =
  4. 4.0.6 × 1.2 =
  5. 5.0.17 × 0.6 =
  6. 6.0.97 × 0.6 =
  7. 7.0.13 × 2.5 =
  8. 8.0.3 × 3.9 =
  9. 9.0.43 × 1.8 =
  10. 10.7.4 × 0.34 =
  11. 11.0.05 × 0.6 =
  12. 12.0.89 × 3.5 =
  13. 13.0.61 × 1.9 =
  14. 14.0.28 × 0.9 =
  15. 15.2.9 × 0.26 =
  16. 16.8.4 × 0.38 =
  17. 17.3.1 × 0.3 =
  18. 18.0.79 × 0.3 =
  19. 19.0.5 × 2.9 =
  20. 20.2.2 × 0.33 =
  21. 21.2.6 × 0.4 =
  22. 22.0.93 × 0.5 =
  23. 23.9.4 × 0.21 =
  24. 24.6.5 × 1.2 =
  25. 25.0.42 × 3.7 =
  26. 26.8.5 × 0.2 =
  27. 27.0.61 × 2.1 =
  28. 28.0.42 × 2.7 =
  29. 29.0.04 × 2.1 =
  30. 30.0.26 × 3.1 =
  31. 31.7.6 × 0.09 =
  32. 32.7.6 × 0.03 =
  33. 33.0.21 × 3.6 =
  34. 34.2.1 × 0.32 =
  35. 35.3.3 × 0.33 =
  36. 36.0.29 × 1.4 =
  37. 37.0.07 × 3.4 =
  38. 38.7.1 × 0.6 =
  39. 39.0.29 × 0.6 =
  40. 40.9.5 × 2.1 =

Answer key

  1. 3.159
  2. 0.561
  3. 0.588
  4. 0.72
  5. 0.102
  6. 0.582
  7. 0.325
  8. 1.17
  9. 0.774
  10. 2.516
  11. 0.03
  12. 3.115
  13. 1.159
  14. 0.252
  15. 0.754
  16. 3.192
  17. 0.93
  18. 0.237
  19. 1.45
  20. 0.726
  21. 1.04
  22. 0.465
  23. 1.974
  24. 7.8
  25. 1.554
  26. 1.7
  27. 1.281
  28. 1.134
  29. 0.084
  30. 0.806
  31. 0.684
  32. 0.228
  33. 0.756
  34. 0.672
  35. 1.089
  36. 0.406
  37. 0.238
  38. 4.26
  39. 0.174
  40. 19.95

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