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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 817 · 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. 1.5.9 × 1.7 =
  2. 2.4.5 × 0.16 =
  3. 3.0.9 × 3.1 =
  4. 4.3.7 × 1.3 =
  5. 5.3.9 × 0.07 =
  6. 6.7.9 × 0.5 =
  7. 7.1.5 × 0.2 =
  8. 8.6.8 × 0.36 =
  9. 9.1.9 × 3.5 =
  10. 10.0.48 × 0.4 =
  11. 11.0.62 × 3.3 =
  12. 12.4.2 × 2.3 =
  13. 13.0.41 × 2.8 =
  14. 14.0.21 × 2.1 =
  15. 15.0.86 × 2.5 =
  16. 16.0.75 × 0.8 =
  17. 17.8.1 × 0.06 =
  18. 18.3.1 × 3.4 =
  19. 19.0.53 × 0.9 =
  20. 20.0.91 × 3.6 =
  21. 21.3.5 × 1.5 =
  22. 22.0.31 × 1.1 =
  23. 23.9.4 × 0.08 =
  24. 24.2.9 × 0.31 =
  25. 25.8.3 × 0.16 =
  26. 26.0.3 × 0.19 =
  27. 27.4.6 × 0.27 =
  28. 28.7.8 × 0.23 =
  29. 29.0.41 × 2.1 =
  30. 30.0.51 × 0.7 =
  31. 31.0.55 × 1.1 =
  32. 32.1.9 × 0.7 =
  33. 33.0.92 × 3.8 =
  34. 34.8.7 × 1.9 =
  35. 35.0.25 × 1.3 =
  36. 36.7.7 × 0.26 =
  37. 37.3.1 × 0.4 =
  38. 38.8.8 × 2.3 =
  39. 39.0.41 × 3.6 =
  40. 40.6.5 × 2.6 =

Answer key

  1. 10.03
  2. 0.72
  3. 2.79
  4. 4.81
  5. 0.273
  6. 3.95
  7. 0.3
  8. 2.448
  9. 6.65
  10. 0.192
  11. 2.046
  12. 9.66
  13. 1.148
  14. 0.441
  15. 2.15
  16. 0.6
  17. 0.486
  18. 10.54
  19. 0.477
  20. 3.276
  21. 5.25
  22. 0.341
  23. 0.752
  24. 0.899
  25. 1.328
  26. 0.057
  27. 1.242
  28. 1.794
  29. 0.861
  30. 0.357
  31. 0.605
  32. 1.33
  33. 3.496
  34. 16.53
  35. 0.325
  36. 2.002
  37. 1.24
  38. 20.24
  39. 1.476
  40. 16.9

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