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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 883 · 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. 1.0.23 × 3.5 =
  2. 2.0.83 × 0.8 =
  3. 3.6.9 × 0.14 =
  4. 4.9.9 × 0.7 =
  5. 5.6.3 × 1.1 =
  6. 6.0.67 × 0.5 =
  7. 7.5.3 × 2.8 =
  8. 8.0.27 × 1.2 =
  9. 9.9.1 × 1.4 =
  10. 10.0.49 × 0.8 =
  11. 11.0.91 × 1.2 =
  12. 12.7.5 × 0.7 =
  13. 13.4.2 × 0.31 =
  14. 14.1.7 × 3.7 =
  15. 15.7.8 × 3.7 =
  16. 16.9.9 × 0.3 =
  17. 17.0.28 × 3.1 =
  18. 18.1.8 × 0.37 =
  19. 19.6.6 × 2.8 =
  20. 20.0.47 × 2.1 =
  21. 21.7.4 × 0.03 =
  22. 22.2.1 × 0.22 =
  23. 23.0.07 × 1.3 =
  24. 24.6.9 × 3.5 =
  25. 25.0.41 × 1.6 =
  26. 26.0.24 × 1.3 =
  27. 27.0.09 × 3.4 =
  28. 28.1.1 × 0.4 =
  29. 29.0.88 × 3.6 =
  30. 30.7.2 × 2.4 =
  31. 31.1.7 × 1.2 =
  32. 32.0.64 × 0.2 =
  33. 33.8.1 × 1.1 =
  34. 34.0.5 × 1.1 =
  35. 35.6.2 × 0.6 =
  36. 36.4.2 × 2.1 =
  37. 37.0.16 × 0.4 =
  38. 38.1.7 × 0.9 =
  39. 39.9.4 × 3.9 =
  40. 40.1.9 × 0.19 =

Answer key

  1. 0.805
  2. 0.664
  3. 0.966
  4. 6.93
  5. 6.93
  6. 0.335
  7. 14.84
  8. 0.324
  9. 12.74
  10. 0.392
  11. 1.092
  12. 5.25
  13. 1.302
  14. 6.29
  15. 28.86
  16. 2.97
  17. 0.868
  18. 0.666
  19. 18.48
  20. 0.987
  21. 0.222
  22. 0.462
  23. 0.091
  24. 24.15
  25. 0.656
  26. 0.312
  27. 0.306
  28. 0.44
  29. 3.168
  30. 17.28
  31. 2.04
  32. 0.128
  33. 8.91
  34. 0.55
  35. 3.72
  36. 8.82
  37. 0.064
  38. 1.53
  39. 36.66
  40. 0.361

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