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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 474 · 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. 1.3.6 × 2.9 =
  2. 2.0.08 × 1.8 =
  3. 3.7.7 × 0.34 =
  4. 4.1.6 × 0.19 =
  5. 5.0.78 × 3.7 =
  6. 6.0.65 × 1.1 =
  7. 7.4.1 × 0.21 =
  8. 8.2.1 × 1.5 =
  9. 9.0.46 × 1.2 =
  10. 10.1.1 × 1.9 =
  11. 11.2.5 × 1.9 =
  12. 12.4.4 × 0.3 =
  13. 13.7.2 × 0.18 =
  14. 14.0.44 × 1.2 =
  15. 15.0.36 × 2.4 =
  16. 16.0.61 × 2.5 =
  17. 17.1.1 × 1.6 =
  18. 18.0.75 × 2.6 =
  19. 19.0.18 × 1.6 =
  20. 20.0.61 × 3.1 =
  21. 21.0.78 × 0.4 =
  22. 22.9.4 × 0.11 =
  23. 23.7.8 × 0.26 =
  24. 24.1.1 × 2.1 =
  25. 25.0.03 × 2.1 =
  26. 26.0.48 × 0.7 =
  27. 27.0.53 × 1.2 =
  28. 28.0.14 × 1.5 =
  29. 29.1.7 × 0.08 =
  30. 30.0.28 × 1.7 =
  31. 31.2.4 × 0.38 =
  32. 32.0.08 × 3.6 =
  33. 33.6.3 × 0.31 =
  34. 34.3.7 × 0.39 =
  35. 35.7.2 × 0.6 =
  36. 36.7.6 × 0.05 =
  37. 37.3.6 × 2.1 =
  38. 38.1.9 × 1.4 =
  39. 39.4.2 × 1.8 =
  40. 40.6.6 × 0.2 =

Answer key

  1. 10.44
  2. 0.144
  3. 2.618
  4. 0.304
  5. 2.886
  6. 0.715
  7. 0.861
  8. 3.15
  9. 0.552
  10. 2.09
  11. 4.75
  12. 1.32
  13. 1.296
  14. 0.528
  15. 0.864
  16. 1.525
  17. 1.76
  18. 1.95
  19. 0.288
  20. 1.891
  21. 0.312
  22. 1.034
  23. 2.028
  24. 2.31
  25. 0.063
  26. 0.336
  27. 0.636
  28. 0.21
  29. 0.136
  30. 0.476
  31. 0.912
  32. 0.288
  33. 1.953
  34. 1.443
  35. 4.32
  36. 0.38
  37. 7.56
  38. 2.66
  39. 7.56
  40. 1.32

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