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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 795 · 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. 1.5.9 × 3.9 =
  2. 2.0.03 × 0.5 =
  3. 3.1.3 × 0.39 =
  4. 4.0.43 × 1.6 =
  5. 5.0.94 × 3.6 =
  6. 6.0.17 × 1.8 =
  7. 7.0.39 × 1.1 =
  8. 8.2.7 × 0.05 =
  9. 9.9.5 × 2.5 =
  10. 10.0.46 × 3.7 =
  11. 11.0.91 × 2.9 =
  12. 12.3.3 × 2.8 =
  13. 13.1.1 × 3.8 =
  14. 14.0.4 × 0.5 =
  15. 15.3.9 × 2.2 =
  16. 16.0.19 × 1.3 =
  17. 17.0.8 × 2.4 =
  18. 18.0.69 × 3.1 =
  19. 19.0.67 × 1.1 =
  20. 20.8.5 × 0.07 =
  21. 21.0.81 × 3.9 =
  22. 22.0.9 × 2.3 =
  23. 23.3.6 × 0.28 =
  24. 24.0.92 × 3.9 =
  25. 25.3.6 × 3.7 =
  26. 26.0.66 × 3.1 =
  27. 27.2.5 × 0.5 =
  28. 28.6.5 × 0.09 =
  29. 29.0.61 × 0.2 =
  30. 30.0.5 × 0.03 =
  31. 31.0.35 × 3.8 =
  32. 32.4.9 × 0.21 =
  33. 33.4.1 × 3.2 =
  34. 34.0.62 × 1.4 =
  35. 35.0.08 × 1.3 =
  36. 36.1.1 × 0.08 =
  37. 37.4.2 × 0.34 =
  38. 38.3.7 × 0.38 =
  39. 39.8.8 × 1.9 =
  40. 40.0.69 × 0.8 =

Answer key

  1. 23.01
  2. 0.015
  3. 0.507
  4. 0.688
  5. 3.384
  6. 0.306
  7. 0.429
  8. 0.135
  9. 23.75
  10. 1.702
  11. 2.639
  12. 9.24
  13. 4.18
  14. 0.2
  15. 8.58
  16. 0.247
  17. 1.92
  18. 2.139
  19. 0.737
  20. 0.595
  21. 3.159
  22. 2.07
  23. 1.008
  24. 3.588
  25. 13.32
  26. 2.046
  27. 1.25
  28. 0.585
  29. 0.122
  30. 0.015
  31. 1.33
  32. 1.029
  33. 13.12
  34. 0.868
  35. 0.104
  36. 0.088
  37. 1.428
  38. 1.406
  39. 16.72
  40. 0.552

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