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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 97 · 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. 1.4.9 × 2.8 =
  2. 2.0.76 × 3.1 =
  3. 3.7.1 × 0.09 =
  4. 4.2.9 × 3.5 =
  5. 5.0.85 × 2.5 =
  6. 6.0.77 × 3.6 =
  7. 7.0.21 × 1.4 =
  8. 8.0.91 × 0.8 =
  9. 9.0.67 × 0.8 =
  10. 10.0.94 × 0.2 =
  11. 11.0.28 × 0.3 =
  12. 12.0.16 × 3.2 =
  13. 13.2.1 × 0.03 =
  14. 14.0.16 × 2.9 =
  15. 15.1.2 × 0.12 =
  16. 16.5.5 × 0.36 =
  17. 17.0.06 × 1.4 =
  18. 18.0.55 × 2.8 =
  19. 19.0.62 × 1.5 =
  20. 20.0.43 × 1.8 =
  21. 21.0.12 × 0.8 =
  22. 22.4.2 × 0.21 =
  23. 23.0.28 × 0.9 =
  24. 24.0.35 × 2.8 =
  25. 25.2.7 × 2.9 =
  26. 26.0.25 × 0.9 =
  27. 27.0.51 × 2.7 =
  28. 28.0.18 × 3.5 =
  29. 29.7.4 × 0.08 =
  30. 30.0.37 × 0.4 =
  31. 31.2.6 × 2.1 =
  32. 32.0.6 × 0.26 =
  33. 33.0.13 × 1.8 =
  34. 34.0.26 × 1.5 =
  35. 35.1.6 × 0.25 =
  36. 36.0.77 × 1.4 =
  37. 37.2.2 × 0.11 =
  38. 38.4.6 × 1.1 =
  39. 39.7.3 × 0.38 =
  40. 40.8.3 × 1.4 =

Answer key

  1. 13.72
  2. 2.356
  3. 0.639
  4. 10.15
  5. 2.125
  6. 2.772
  7. 0.294
  8. 0.728
  9. 0.536
  10. 0.188
  11. 0.084
  12. 0.512
  13. 0.063
  14. 0.464
  15. 0.144
  16. 1.98
  17. 0.084
  18. 1.54
  19. 0.93
  20. 0.774
  21. 0.096
  22. 0.882
  23. 0.252
  24. 0.98
  25. 7.83
  26. 0.225
  27. 1.377
  28. 0.63
  29. 0.592
  30. 0.148
  31. 5.46
  32. 0.156
  33. 0.234
  34. 0.39
  35. 0.4
  36. 1.078
  37. 0.242
  38. 5.06
  39. 2.774
  40. 11.62

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