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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 421 · 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. 1.0.55 × 1.1 =
  2. 2.3.4 × 2.7 =
  3. 3.0.68 × 0.5 =
  4. 4.0.36 × 0.8 =
  5. 5.9.5 × 3.5 =
  6. 6.0.91 × 3.1 =
  7. 7.5.6 × 0.05 =
  8. 8.5.4 × 0.37 =
  9. 9.0.2 × 0.8 =
  10. 10.0.71 × 0.9 =
  11. 11.0.19 × 2.2 =
  12. 12.0.74 × 0.2 =
  13. 13.2.4 × 3.1 =
  14. 14.6.6 × 0.18 =
  15. 15.6.1 × 1.6 =
  16. 16.0.52 × 1.2 =
  17. 17.0.87 × 1.1 =
  18. 18.8.7 × 2.4 =
  19. 19.0.09 × 3.1 =
  20. 20.2.4 × 0.04 =
  21. 21.4.5 × 0.32 =
  22. 22.0.95 × 2.3 =
  23. 23.6.5 × 1.8 =
  24. 24.7.9 × 0.11 =
  25. 25.0.29 × 1.1 =
  26. 26.0.76 × 1.5 =
  27. 27.9.6 × 3.6 =
  28. 28.0.08 × 0.7 =
  29. 29.0.74 × 3.6 =
  30. 30.0.94 × 2.9 =
  31. 31.1.1 × 1.6 =
  32. 32.0.44 × 3.8 =
  33. 33.9.3 × 0.05 =
  34. 34.6.6 × 0.6 =
  35. 35.7.8 × 0.5 =
  36. 36.0.73 × 2.5 =
  37. 37.1.3 × 1.8 =
  38. 38.0.12 × 1.2 =
  39. 39.9.3 × 1.1 =
  40. 40.0.22 × 2.8 =

Answer key

  1. 0.605
  2. 9.18
  3. 0.34
  4. 0.288
  5. 33.25
  6. 2.821
  7. 0.28
  8. 1.998
  9. 0.16
  10. 0.639
  11. 0.418
  12. 0.148
  13. 7.44
  14. 1.188
  15. 9.76
  16. 0.624
  17. 0.957
  18. 20.88
  19. 0.279
  20. 0.096
  21. 1.44
  22. 2.185
  23. 11.7
  24. 0.869
  25. 0.319
  26. 1.14
  27. 34.56
  28. 0.056
  29. 2.664
  30. 2.726
  31. 1.76
  32. 1.672
  33. 0.465
  34. 3.96
  35. 3.9
  36. 1.825
  37. 2.34
  38. 0.144
  39. 10.23
  40. 0.616

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