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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 990 · 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. 1.0.94 × 2.7 =
  2. 2.4.9 × 0.24 =
  3. 3.1.9 × 0.16 =
  4. 4.5.3 × 1.1 =
  5. 5.0.73 × 1.7 =
  6. 6.3.1 × 2.1 =
  7. 7.8.5 × 0.11 =
  8. 8.0.9 × 0.15 =
  9. 9.0.84 × 2.2 =
  10. 10.5.2 × 0.09 =
  11. 11.0.31 × 1.1 =
  12. 12.0.05 × 0.8 =
  13. 13.0.87 × 1.9 =
  14. 14.8.6 × 0.08 =
  15. 15.4.4 × 1.8 =
  16. 16.5.9 × 2.2 =
  17. 17.8.5 × 0.11 =
  18. 18.0.98 × 0.6 =
  19. 19.0.16 × 0.4 =
  20. 20.2.1 × 0.17 =
  21. 21.0.29 × 1.6 =
  22. 22.0.71 × 3.2 =
  23. 23.4.8 × 1.5 =
  24. 24.1.1 × 0.19 =
  25. 25.0.14 × 2.4 =
  26. 26.0.61 × 0.6 =
  27. 27.4.8 × 0.13 =
  28. 28.0.88 × 1.3 =
  29. 29.6.1 × 0.35 =
  30. 30.0.64 × 2.1 =
  31. 31.5.9 × 0.9 =
  32. 32.8.2 × 0.24 =
  33. 33.0.49 × 1.8 =
  34. 34.0.78 × 3.8 =
  35. 35.6.3 × 0.12 =
  36. 36.0.19 × 2.1 =
  37. 37.4.6 × 1.7 =
  38. 38.9.7 × 0.8 =
  39. 39.0.79 × 3.4 =
  40. 40.0.69 × 0.6 =

Answer key

  1. 2.538
  2. 1.176
  3. 0.304
  4. 5.83
  5. 1.241
  6. 6.51
  7. 0.935
  8. 0.135
  9. 1.848
  10. 0.468
  11. 0.341
  12. 0.04
  13. 1.653
  14. 0.688
  15. 7.92
  16. 12.98
  17. 0.935
  18. 0.588
  19. 0.064
  20. 0.357
  21. 0.464
  22. 2.272
  23. 7.2
  24. 0.209
  25. 0.336
  26. 0.366
  27. 0.624
  28. 1.144
  29. 2.135
  30. 1.344
  31. 5.31
  32. 1.968
  33. 0.882
  34. 2.964
  35. 0.756
  36. 0.399
  37. 7.82
  38. 7.76
  39. 2.686
  40. 0.414

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