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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 824 · 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. 1.0.78 × 3.5 =
  2. 2.4.3 × 2.8 =
  3. 3.0.44 × 3.1 =
  4. 4.0.06 × 3.1 =
  5. 5.6.1 × 0.37 =
  6. 6.5.6 × 2.7 =
  7. 7.3.6 × 0.29 =
  8. 8.0.9 × 1.1 =
  9. 9.4.1 × 1.4 =
  10. 10.0.81 × 3.4 =
  11. 11.8.9 × 0.6 =
  12. 12.6.9 × 0.2 =
  13. 13.4.8 × 0.7 =
  14. 14.3.6 × 1.2 =
  15. 15.0.23 × 1.5 =
  16. 16.2.6 × 0.26 =
  17. 17.2.2 × 0.18 =
  18. 18.9.5 × 1.8 =
  19. 19.9.9 × 0.31 =
  20. 20.3.4 × 2.3 =
  21. 21.0.26 × 3.1 =
  22. 22.8.8 × 0.39 =
  23. 23.0.15 × 3.4 =
  24. 24.1.5 × 3.9 =
  25. 25.8.3 × 0.15 =
  26. 26.3.5 × 1.1 =
  27. 27.1.6 × 0.21 =
  28. 28.0.05 × 2.5 =
  29. 29.9.8 × 1.7 =
  30. 30.0.78 × 0.7 =
  31. 31.0.3 × 1.3 =
  32. 32.0.51 × 3.3 =
  33. 33.9.6 × 0.05 =
  34. 34.0.52 × 0.2 =
  35. 35.0.81 × 2.5 =
  36. 36.4.6 × 2.4 =
  37. 37.0.35 × 1.2 =
  38. 38.0.86 × 1.5 =
  39. 39.0.54 × 1.1 =
  40. 40.2.8 × 3.7 =

Answer key

  1. 2.73
  2. 12.04
  3. 1.364
  4. 0.186
  5. 2.257
  6. 15.12
  7. 1.044
  8. 0.99
  9. 5.74
  10. 2.754
  11. 5.34
  12. 1.38
  13. 3.36
  14. 4.32
  15. 0.345
  16. 0.676
  17. 0.396
  18. 17.1
  19. 3.069
  20. 7.82
  21. 0.806
  22. 3.432
  23. 0.51
  24. 5.85
  25. 1.245
  26. 3.85
  27. 0.336
  28. 0.125
  29. 16.66
  30. 0.546
  31. 0.39
  32. 1.683
  33. 0.48
  34. 0.104
  35. 2.025
  36. 11.04
  37. 0.42
  38. 1.29
  39. 0.594
  40. 10.36

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