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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 100 · 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. 1.0.87 × 1.1 =
  2. 2.0.38 × 1.2 =
  3. 3.4.2 × 2.9 =
  4. 4.4.1 × 0.05 =
  5. 5.0.56 × 0.7 =
  6. 6.0.31 × 3.7 =
  7. 7.0.06 × 1.9 =
  8. 8.2.1 × 0.05 =
  9. 9.0.61 × 1.1 =
  10. 10.0.14 × 3.4 =
  11. 11.8.6 × 0.26 =
  12. 12.5.7 × 0.15 =
  13. 13.0.31 × 1.7 =
  14. 14.6.8 × 2.8 =
  15. 15.0.51 × 2.6 =
  16. 16.1.1 × 0.26 =
  17. 17.0.12 × 1.8 =
  18. 18.7.1 × 0.12 =
  19. 19.0.61 × 0.3 =
  20. 20.0.05 × 3.6 =
  21. 21.0.63 × 0.9 =
  22. 22.0.3 × 2.9 =
  23. 23.8.4 × 0.8 =
  24. 24.0.96 × 2.4 =
  25. 25.8.7 × 3.9 =
  26. 26.2.6 × 3.8 =
  27. 27.0.23 × 3.2 =
  28. 28.7.6 × 0.29 =
  29. 29.0.34 × 2.4 =
  30. 30.2.9 × 1.6 =
  31. 31.0.3 × 0.06 =
  32. 32.6.4 × 3.1 =
  33. 33.0.18 × 1.6 =
  34. 34.6.1 × 0.23 =
  35. 35.1.8 × 1.3 =
  36. 36.0.02 × 2.1 =
  37. 37.0.17 × 0.3 =
  38. 38.4.3 × 0.8 =
  39. 39.8.6 × 1.5 =
  40. 40.1.9 × 3.1 =

Answer key

  1. 0.957
  2. 0.456
  3. 12.18
  4. 0.205
  5. 0.392
  6. 1.147
  7. 0.114
  8. 0.105
  9. 0.671
  10. 0.476
  11. 2.236
  12. 0.855
  13. 0.527
  14. 19.04
  15. 1.326
  16. 0.286
  17. 0.216
  18. 0.852
  19. 0.183
  20. 0.18
  21. 0.567
  22. 0.87
  23. 6.72
  24. 2.304
  25. 33.93
  26. 9.88
  27. 0.736
  28. 2.204
  29. 0.816
  30. 4.64
  31. 0.018
  32. 19.84
  33. 0.288
  34. 1.403
  35. 2.34
  36. 0.042
  37. 0.051
  38. 3.44
  39. 12.9
  40. 5.89

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