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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 785 · 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. 1.0.73 × 3.9 =
  2. 2.4.6 × 1.4 =
  3. 3.9.5 × 0.25 =
  4. 4.0.96 × 2.5 =
  5. 5.5.1 × 0.11 =
  6. 6.8.6 × 0.9 =
  7. 7.0.07 × 3.6 =
  8. 8.5.6 × 0.09 =
  9. 9.4.7 × 0.03 =
  10. 10.0.36 × 0.7 =
  11. 11.4.8 × 3.5 =
  12. 12.0.57 × 0.3 =
  13. 13.0.6 × 0.32 =
  14. 14.5.1 × 0.23 =
  15. 15.0.65 × 1.3 =
  16. 16.2.7 × 0.34 =
  17. 17.8.3 × 0.39 =
  18. 18.3.7 × 3.3 =
  19. 19.0.31 × 0.2 =
  20. 20.3.8 × 0.17 =
  21. 21.0.72 × 2.8 =
  22. 22.0.11 × 3.4 =
  23. 23.0.22 × 3.5 =
  24. 24.0.04 × 3.7 =
  25. 25.0.08 × 3.1 =
  26. 26.8.1 × 0.17 =
  27. 27.6.6 × 0.23 =
  28. 28.5.9 × 1.5 =
  29. 29.8.1 × 0.09 =
  30. 30.0.22 × 2.6 =
  31. 31.1.5 × 0.24 =
  32. 32.0.68 × 3.6 =
  33. 33.2.1 × 2.6 =
  34. 34.0.19 × 0.3 =
  35. 35.9.9 × 3.1 =
  36. 36.1.1 × 0.31 =
  37. 37.0.22 × 2.4 =
  38. 38.8.7 × 2.1 =
  39. 39.0.68 × 2.3 =
  40. 40.0.38 × 1.2 =

Answer key

  1. 2.847
  2. 6.44
  3. 2.375
  4. 2.4
  5. 0.561
  6. 7.74
  7. 0.252
  8. 0.504
  9. 0.141
  10. 0.252
  11. 16.8
  12. 0.171
  13. 0.192
  14. 1.173
  15. 0.845
  16. 0.918
  17. 3.237
  18. 12.21
  19. 0.062
  20. 0.646
  21. 2.016
  22. 0.374
  23. 0.77
  24. 0.148
  25. 0.248
  26. 1.377
  27. 1.518
  28. 8.85
  29. 0.729
  30. 0.572
  31. 0.36
  32. 2.448
  33. 5.46
  34. 0.057
  35. 30.69
  36. 0.341
  37. 0.528
  38. 18.27
  39. 1.564
  40. 0.456

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