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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 145 · 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. 1.7.3 × 0.35 =
  2. 2.2.2 × 1.5 =
  3. 3.0.23 × 2.9 =
  4. 4.4.2 × 0.12 =
  5. 5.5.1 × 0.8 =
  6. 6.2.3 × 2.5 =
  7. 7.2.7 × 2.1 =
  8. 8.7.4 × 0.03 =
  9. 9.0.5 × 3.8 =
  10. 10.0.07 × 3.1 =
  11. 11.7.7 × 0.19 =
  12. 12.8.1 × 0.26 =
  13. 13.9.6 × 0.17 =
  14. 14.3.1 × 1.4 =
  15. 15.0.73 × 2.8 =
  16. 16.0.36 × 3.1 =
  17. 17.0.15 × 0.2 =
  18. 18.0.67 × 1.1 =
  19. 19.0.48 × 3.4 =
  20. 20.0.72 × 0.5 =
  21. 21.2.1 × 0.5 =
  22. 22.1.1 × 2.4 =
  23. 23.0.61 × 0.7 =
  24. 24.2.7 × 3.4 =
  25. 25.7.2 × 1.7 =
  26. 26.6.2 × 0.33 =
  27. 27.0.82 × 3.9 =
  28. 28.0.41 × 1.1 =
  29. 29.0.81 × 3.1 =
  30. 30.0.71 × 0.9 =
  31. 31.8.3 × 0.12 =
  32. 32.4.2 × 1.4 =
  33. 33.0.62 × 3.6 =
  34. 34.0.15 × 1.6 =
  35. 35.0.04 × 1.4 =
  36. 36.5.4 × 0.06 =
  37. 37.0.31 × 0.2 =
  38. 38.0.2 × 2.2 =
  39. 39.0.61 × 1.3 =
  40. 40.7.1 × 0.08 =

Answer key

  1. 2.555
  2. 3.3
  3. 0.667
  4. 0.504
  5. 4.08
  6. 5.75
  7. 5.67
  8. 0.222
  9. 1.9
  10. 0.217
  11. 1.463
  12. 2.106
  13. 1.632
  14. 4.34
  15. 2.044
  16. 1.116
  17. 0.03
  18. 0.737
  19. 1.632
  20. 0.36
  21. 1.05
  22. 2.64
  23. 0.427
  24. 9.18
  25. 12.24
  26. 2.046
  27. 3.198
  28. 0.451
  29. 2.511
  30. 0.639
  31. 0.996
  32. 5.88
  33. 2.232
  34. 0.24
  35. 0.056
  36. 0.324
  37. 0.062
  38. 0.44
  39. 0.793
  40. 0.568

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