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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 644 · 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. 1.0.67 × 3.2 =
  2. 2.0.71 × 1.5 =
  3. 3.4.9 × 1.1 =
  4. 4.5.1 × 0.13 =
  5. 5.1.5 × 0.29 =
  6. 6.2.1 × 3.7 =
  7. 7.2.2 × 0.5 =
  8. 8.5.9 × 3.5 =
  9. 9.2.3 × 0.22 =
  10. 10.4.1 × 0.09 =
  11. 11.0.91 × 1.1 =
  12. 12.2.3 × 0.31 =
  13. 13.0.67 × 2.4 =
  14. 14.8.5 × 1.7 =
  15. 15.6.7 × 2.8 =
  16. 16.0.66 × 0.8 =
  17. 17.0.06 × 3.1 =
  18. 18.0.35 × 2.8 =
  19. 19.0.31 × 1.5 =
  20. 20.0.34 × 3.6 =
  21. 21.3.8 × 3.7 =
  22. 22.0.06 × 2.4 =
  23. 23.8.1 × 3.5 =
  24. 24.0.31 × 2.9 =
  25. 25.4.8 × 1.4 =
  26. 26.0.22 × 2.2 =
  27. 27.4.8 × 0.09 =
  28. 28.0.23 × 1.7 =
  29. 29.7.5 × 1.8 =
  30. 30.0.68 × 0.5 =
  31. 31.4.9 × 2.7 =
  32. 32.9.3 × 2.9 =
  33. 33.0.8 × 2.9 =
  34. 34.4.5 × 2.5 =
  35. 35.0.99 × 2.9 =
  36. 36.7.1 × 2.8 =
  37. 37.0.09 × 1.3 =
  38. 38.8.9 × 0.6 =
  39. 39.0.62 × 1.3 =
  40. 40.0.38 × 3.8 =

Answer key

  1. 2.144
  2. 1.065
  3. 5.39
  4. 0.663
  5. 0.435
  6. 7.77
  7. 1.1
  8. 20.65
  9. 0.506
  10. 0.369
  11. 1.001
  12. 0.713
  13. 1.608
  14. 14.45
  15. 18.76
  16. 0.528
  17. 0.186
  18. 0.98
  19. 0.465
  20. 1.224
  21. 14.06
  22. 0.144
  23. 28.35
  24. 0.899
  25. 6.72
  26. 0.484
  27. 0.432
  28. 0.391
  29. 13.5
  30. 0.34
  31. 13.23
  32. 26.97
  33. 2.32
  34. 11.25
  35. 2.871
  36. 19.88
  37. 0.117
  38. 5.34
  39. 0.806
  40. 1.444

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