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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 901 · 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. 1.5.8 × 0.21 =
  2. 2.7.8 × 0.22 =
  3. 3.0.38 × 2.8 =
  4. 4.0.59 × 3.9 =
  5. 5.0.21 × 1.1 =
  6. 6.0.31 × 2.9 =
  7. 7.0.72 × 2.9 =
  8. 8.0.78 × 3.3 =
  9. 9.1.9 × 2.2 =
  10. 10.0.75 × 2.7 =
  11. 11.5.1 × 2.4 =
  12. 12.8.8 × 2.2 =
  13. 13.9.6 × 0.32 =
  14. 14.0.91 × 0.2 =
  15. 15.2.6 × 2.1 =
  16. 16.0.38 × 2.3 =
  17. 17.7.5 × 0.39 =
  18. 18.0.32 × 3.7 =
  19. 19.1.4 × 0.12 =
  20. 20.3.6 × 3.2 =
  21. 21.0.17 × 2.2 =
  22. 22.0.39 × 2.6 =
  23. 23.7.5 × 0.14 =
  24. 24.0.82 × 2.1 =
  25. 25.9.6 × 0.18 =
  26. 26.6.8 × 0.34 =
  27. 27.4.8 × 0.18 =
  28. 28.9.4 × 0.06 =
  29. 29.4.4 × 3.3 =
  30. 30.5.7 × 0.37 =
  31. 31.0.18 × 3.6 =
  32. 32.1.4 × 0.31 =
  33. 33.0.83 × 1.4 =
  34. 34.0.47 × 2.5 =
  35. 35.0.19 × 3.4 =
  36. 36.2.3 × 0.05 =
  37. 37.0.28 × 3.2 =
  38. 38.0.11 × 1.3 =
  39. 39.0.5 × 3.6 =
  40. 40.0.04 × 1.1 =

Answer key

  1. 1.218
  2. 1.716
  3. 1.064
  4. 2.301
  5. 0.231
  6. 0.899
  7. 2.088
  8. 2.574
  9. 4.18
  10. 2.025
  11. 12.24
  12. 19.36
  13. 3.072
  14. 0.182
  15. 5.46
  16. 0.874
  17. 2.925
  18. 1.184
  19. 0.168
  20. 11.52
  21. 0.374
  22. 1.014
  23. 1.05
  24. 1.722
  25. 1.728
  26. 2.312
  27. 0.864
  28. 0.564
  29. 14.52
  30. 2.109
  31. 0.648
  32. 0.434
  33. 1.162
  34. 1.175
  35. 0.646
  36. 0.115
  37. 0.896
  38. 0.143
  39. 1.8
  40. 0.044

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