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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 809 · 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. 1.5.5 × 3.6 =
  2. 2.0.26 × 1.3 =
  3. 3.0.9 × 0.31 =
  4. 4.0.45 × 3.1 =
  5. 5.0.11 × 2.1 =
  6. 6.0.11 × 1.2 =
  7. 7.0.25 × 1.9 =
  8. 8.6.4 × 1.7 =
  9. 9.9.3 × 1.1 =
  10. 10.3.3 × 0.21 =
  11. 11.2.1 × 2.1 =
  12. 12.0.8 × 1.6 =
  13. 13.0.81 × 0.2 =
  14. 14.0.13 × 3.8 =
  15. 15.0.29 × 1.9 =
  16. 16.0.13 × 0.4 =
  17. 17.0.25 × 2.1 =
  18. 18.0.11 × 0.9 =
  19. 19.8.6 × 0.5 =
  20. 20.0.68 × 2.1 =
  21. 21.4.6 × 0.27 =
  22. 22.9.9 × 0.2 =
  23. 23.0.67 × 0.5 =
  24. 24.6.2 × 0.07 =
  25. 25.2.1 × 1.7 =
  26. 26.5.3 × 0.17 =
  27. 27.3.1 × 0.08 =
  28. 28.0.07 × 1.3 =
  29. 29.1.7 × 1.1 =
  30. 30.0.89 × 3.5 =
  31. 31.0.36 × 0.8 =
  32. 32.0.06 × 1.4 =
  33. 33.9.8 × 3.8 =
  34. 34.0.91 × 0.9 =
  35. 35.0.87 × 0.4 =
  36. 36.0.92 × 0.3 =
  37. 37.0.95 × 0.5 =
  38. 38.5.9 × 0.16 =
  39. 39.7.2 × 2.8 =
  40. 40.0.3 × 0.31 =

Answer key

  1. 19.8
  2. 0.338
  3. 0.279
  4. 1.395
  5. 0.231
  6. 0.132
  7. 0.475
  8. 10.88
  9. 10.23
  10. 0.693
  11. 4.41
  12. 1.28
  13. 0.162
  14. 0.494
  15. 0.551
  16. 0.052
  17. 0.525
  18. 0.099
  19. 4.3
  20. 1.428
  21. 1.242
  22. 1.98
  23. 0.335
  24. 0.434
  25. 3.57
  26. 0.901
  27. 0.248
  28. 0.091
  29. 1.87
  30. 3.115
  31. 0.288
  32. 0.084
  33. 37.24
  34. 0.819
  35. 0.348
  36. 0.276
  37. 0.475
  38. 0.944
  39. 20.16
  40. 0.093

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