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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 485 · 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. 1.8.9 × 0.05 =
  2. 2.2.6 × 2.8 =
  3. 3.2.7 × 2.1 =
  4. 4.0.44 × 0.2 =
  5. 5.6.7 × 0.22 =
  6. 6.0.12 × 1.6 =
  7. 7.0.87 × 3.2 =
  8. 8.0.94 × 2.6 =
  9. 9.0.94 × 0.4 =
  10. 10.6.9 × 0.4 =
  11. 11.3.7 × 1.1 =
  12. 12.0.03 × 3.5 =
  13. 13.0.63 × 3.3 =
  14. 14.5.4 × 1.1 =
  15. 15.0.11 × 1.9 =
  16. 16.0.32 × 0.9 =
  17. 17.0.21 × 0.8 =
  18. 18.0.8 × 1.2 =
  19. 19.5.2 × 0.18 =
  20. 20.0.61 × 3.6 =
  21. 21.0.74 × 1.1 =
  22. 22.0.93 × 2.3 =
  23. 23.1.4 × 0.03 =
  24. 24.0.53 × 1.6 =
  25. 25.0.7 × 0.4 =
  26. 26.0.36 × 1.7 =
  27. 27.0.31 × 1.3 =
  28. 28.5.1 × 0.21 =
  29. 29.0.06 × 0.4 =
  30. 30.0.85 × 3.6 =
  31. 31.1.3 × 1.2 =
  32. 32.0.61 × 1.1 =
  33. 33.1.2 × 0.09 =
  34. 34.0.08 × 1.3 =
  35. 35.2.4 × 1.8 =
  36. 36.1.3 × 2.6 =
  37. 37.0.13 × 3.7 =
  38. 38.1.4 × 0.31 =
  39. 39.1.9 × 2.4 =
  40. 40.6.9 × 0.27 =

Answer key

  1. 0.445
  2. 7.28
  3. 5.67
  4. 0.088
  5. 1.474
  6. 0.192
  7. 2.784
  8. 2.444
  9. 0.376
  10. 2.76
  11. 4.07
  12. 0.105
  13. 2.079
  14. 5.94
  15. 0.209
  16. 0.288
  17. 0.168
  18. 0.96
  19. 0.936
  20. 2.196
  21. 0.814
  22. 2.139
  23. 0.042
  24. 0.848
  25. 0.28
  26. 0.612
  27. 0.403
  28. 1.071
  29. 0.024
  30. 3.06
  31. 1.56
  32. 0.671
  33. 0.108
  34. 0.104
  35. 4.32
  36. 3.38
  37. 0.481
  38. 0.434
  39. 4.56
  40. 1.863

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