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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 799 · 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. 1.6.1 × 3.1 =
  2. 2.0.21 × 2.8 =
  3. 3.8.3 × 0.16 =
  4. 4.8.5 × 0.23 =
  5. 5.2.5 × 3.5 =
  6. 6.0.54 × 1.6 =
  7. 7.4.4 × 0.09 =
  8. 8.5.1 × 0.36 =
  9. 9.4.8 × 0.8 =
  10. 10.0.52 × 2.1 =
  11. 11.3.7 × 3.3 =
  12. 12.4.1 × 1.1 =
  13. 13.9.2 × 0.13 =
  14. 14.0.89 × 3.1 =
  15. 15.0.62 × 3.1 =
  16. 16.9.5 × 0.11 =
  17. 17.8.9 × 0.07 =
  18. 18.1.9 × 1.7 =
  19. 19.0.89 × 2.1 =
  20. 20.0.51 × 1.1 =
  21. 21.6.6 × 1.9 =
  22. 22.0.22 × 3.1 =
  23. 23.0.04 × 0.4 =
  24. 24.0.22 × 1.1 =
  25. 25.0.6 × 1.4 =
  26. 26.0.59 × 2.5 =
  27. 27.1.1 × 0.06 =
  28. 28.1.3 × 1.1 =
  29. 29.0.3 × 0.23 =
  30. 30.6.9 × 0.16 =
  31. 31.0.11 × 1.9 =
  32. 32.0.75 × 2.9 =
  33. 33.8.1 × 0.11 =
  34. 34.3.8 × 0.27 =
  35. 35.0.18 × 2.8 =
  36. 36.8.7 × 0.4 =
  37. 37.7.5 × 2.1 =
  38. 38.0.76 × 3.5 =
  39. 39.0.4 × 0.03 =
  40. 40.4.9 × 0.21 =

Answer key

  1. 18.91
  2. 0.588
  3. 1.328
  4. 1.955
  5. 8.75
  6. 0.864
  7. 0.396
  8. 1.836
  9. 3.84
  10. 1.092
  11. 12.21
  12. 4.51
  13. 1.196
  14. 2.759
  15. 1.922
  16. 1.045
  17. 0.623
  18. 3.23
  19. 1.869
  20. 0.561
  21. 12.54
  22. 0.682
  23. 0.016
  24. 0.242
  25. 0.84
  26. 1.475
  27. 0.066
  28. 1.43
  29. 0.069
  30. 1.104
  31. 0.209
  32. 2.175
  33. 0.891
  34. 1.026
  35. 0.504
  36. 3.48
  37. 15.75
  38. 2.66
  39. 0.012
  40. 1.029

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