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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 1 · 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. 1.3.8 × 3.7 =
  2. 2.0.91 × 3.3 =
  3. 3.1.6 × 0.07 =
  4. 4.0.18 × 2.2 =
  5. 5.6.6 × 2.5 =
  6. 6.9.9 × 0.12 =
  7. 7.0.45 × 3.1 =
  8. 8.0.51 × 1.1 =
  9. 9.0.17 × 1.9 =
  10. 10.0.72 × 3.3 =
  11. 11.5.8 × 2.3 =
  12. 12.0.29 × 2.5 =
  13. 13.0.81 × 3.9 =
  14. 14.0.07 × 2.4 =
  15. 15.0.03 × 1.8 =
  16. 16.0.28 × 0.6 =
  17. 17.0.88 × 2.6 =
  18. 18.8.4 × 2.8 =
  19. 19.0.11 × 3.9 =
  20. 20.3.1 × 0.32 =
  21. 21.0.38 × 3.5 =
  22. 22.0.27 × 0.9 =
  23. 23.4.8 × 0.08 =
  24. 24.0.67 × 3.8 =
  25. 25.9.4 × 0.8 =
  26. 26.0.39 × 2.8 =
  27. 27.0.14 × 2.2 =
  28. 28.0.52 × 1.8 =
  29. 29.4.1 × 1.1 =
  30. 30.0.86 × 1.1 =
  31. 31.0.7 × 1.9 =
  32. 32.4.5 × 0.36 =
  33. 33.3.2 × 0.5 =
  34. 34.0.05 × 0.4 =
  35. 35.0.43 × 2.7 =
  36. 36.0.35 × 2.8 =
  37. 37.1.9 × 0.27 =
  38. 38.0.92 × 0.5 =
  39. 39.0.7 × 0.39 =
  40. 40.0.95 × 1.6 =

Answer key

  1. 14.06
  2. 3.003
  3. 0.112
  4. 0.396
  5. 16.5
  6. 1.188
  7. 1.395
  8. 0.561
  9. 0.323
  10. 2.376
  11. 13.34
  12. 0.725
  13. 3.159
  14. 0.168
  15. 0.054
  16. 0.168
  17. 2.288
  18. 23.52
  19. 0.429
  20. 0.992
  21. 1.33
  22. 0.243
  23. 0.384
  24. 2.546
  25. 7.52
  26. 1.092
  27. 0.308
  28. 0.936
  29. 4.51
  30. 0.946
  31. 1.33
  32. 1.62
  33. 1.6
  34. 0.02
  35. 1.161
  36. 0.98
  37. 0.513
  38. 0.46
  39. 0.273
  40. 1.52

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