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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 538 · 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. 1.0.81 × 3.9 =
  2. 2.0.63 × 0.7 =
  3. 3.0.33 × 1.4 =
  4. 4.0.66 × 3.4 =
  5. 5.5.5 × 1.8 =
  6. 6.0.64 × 3.7 =
  7. 7.0.12 × 0.8 =
  8. 8.5.1 × 1.5 =
  9. 9.0.83 × 2.7 =
  10. 10.0.4 × 0.05 =
  11. 11.0.09 × 1.9 =
  12. 12.2.3 × 3.5 =
  13. 13.7.1 × 3.2 =
  14. 14.0.21 × 2.1 =
  15. 15.0.28 × 1.1 =
  16. 16.4.8 × 1.2 =
  17. 17.0.35 × 3.7 =
  18. 18.4.6 × 0.31 =
  19. 19.0.05 × 0.8 =
  20. 20.0.93 × 2.4 =
  21. 21.0.68 × 3.9 =
  22. 22.1.3 × 0.2 =
  23. 23.0.29 × 1.1 =
  24. 24.0.58 × 0.5 =
  25. 25.2.7 × 0.28 =
  26. 26.4.2 × 0.11 =
  27. 27.0.51 × 0.6 =
  28. 28.0.03 × 2.5 =
  29. 29.0.02 × 0.3 =
  30. 30.0.28 × 3.8 =
  31. 31.1.5 × 3.2 =
  32. 32.3.1 × 1.1 =
  33. 33.0.72 × 3.2 =
  34. 34.0.71 × 1.1 =
  35. 35.0.81 × 1.7 =
  36. 36.0.41 × 0.7 =
  37. 37.3.9 × 0.35 =
  38. 38.1.7 × 3.5 =
  39. 39.6.6 × 3.1 =
  40. 40.0.91 × 2.6 =

Answer key

  1. 3.159
  2. 0.441
  3. 0.462
  4. 2.244
  5. 9.9
  6. 2.368
  7. 0.096
  8. 7.65
  9. 2.241
  10. 0.02
  11. 0.171
  12. 8.05
  13. 22.72
  14. 0.441
  15. 0.308
  16. 5.76
  17. 1.295
  18. 1.426
  19. 0.04
  20. 2.232
  21. 2.652
  22. 0.26
  23. 0.319
  24. 0.29
  25. 0.756
  26. 0.462
  27. 0.306
  28. 0.075
  29. 0.006
  30. 1.064
  31. 4.8
  32. 3.41
  33. 2.304
  34. 0.781
  35. 1.377
  36. 0.287
  37. 1.365
  38. 5.95
  39. 20.46
  40. 2.366

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