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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 791 · 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. 1.7.4 × 0.17 =
  2. 2.0.7 × 0.27 =
  3. 3.6.2 × 3.6 =
  4. 4.0.83 × 0.3 =
  5. 5.8.1 × 3.3 =
  6. 6.0.11 × 2.5 =
  7. 7.0.99 × 2.9 =
  8. 8.0.7 × 0.18 =
  9. 9.0.96 × 3.1 =
  10. 10.0.18 × 1.6 =
  11. 11.0.62 × 2.2 =
  12. 12.0.4 × 3.7 =
  13. 13.4.9 × 0.28 =
  14. 14.0.74 × 1.6 =
  15. 15.4.4 × 1.3 =
  16. 16.0.58 × 1.1 =
  17. 17.1.8 × 0.31 =
  18. 18.1.6 × 0.6 =
  19. 19.0.33 × 3.3 =
  20. 20.3.2 × 2.3 =
  21. 21.9.7 × 3.9 =
  22. 22.3.2 × 0.9 =
  23. 23.0.06 × 1.8 =
  24. 24.0.18 × 3.4 =
  25. 25.6.1 × 0.35 =
  26. 26.4.2 × 0.29 =
  27. 27.1.7 × 3.6 =
  28. 28.0.33 × 0.2 =
  29. 29.8.3 × 0.11 =
  30. 30.0.3 × 0.15 =
  31. 31.0.74 × 3.6 =
  32. 32.0.94 × 2.7 =
  33. 33.9.8 × 0.28 =
  34. 34.0.25 × 1.4 =
  35. 35.0.33 × 0.2 =
  36. 36.2.3 × 2.1 =
  37. 37.8.8 × 0.06 =
  38. 38.0.05 × 2.8 =
  39. 39.0.38 × 0.9 =
  40. 40.0.11 × 1.9 =

Answer key

  1. 1.258
  2. 0.189
  3. 22.32
  4. 0.249
  5. 26.73
  6. 0.275
  7. 2.871
  8. 0.126
  9. 2.976
  10. 0.288
  11. 1.364
  12. 1.48
  13. 1.372
  14. 1.184
  15. 5.72
  16. 0.638
  17. 0.558
  18. 0.96
  19. 1.089
  20. 7.36
  21. 37.83
  22. 2.88
  23. 0.108
  24. 0.612
  25. 2.135
  26. 1.218
  27. 6.12
  28. 0.066
  29. 0.913
  30. 0.045
  31. 2.664
  32. 2.538
  33. 2.744
  34. 0.35
  35. 0.066
  36. 4.83
  37. 0.528
  38. 0.14
  39. 0.342
  40. 0.209

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