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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 798 · 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. 1.4.7 × 1.2 =
  2. 2.3.5 × 2.3 =
  3. 3.2.7 × 0.8 =
  4. 4.0.62 × 1.2 =
  5. 5.0.53 × 3.9 =
  6. 6.4.7 × 0.6 =
  7. 7.0.85 × 2.6 =
  8. 8.0.21 × 1.2 =
  9. 9.0.6 × 0.09 =
  10. 10.0.81 × 2.5 =
  11. 11.0.3 × 0.34 =
  12. 12.0.11 × 1.9 =
  13. 13.9.6 × 2.5 =
  14. 14.0.98 × 2.2 =
  15. 15.6.1 × 0.17 =
  16. 16.9.1 × 0.7 =
  17. 17.9.7 × 3.1 =
  18. 18.0.79 × 3.6 =
  19. 19.0.21 × 3.1 =
  20. 20.0.29 × 0.3 =
  21. 21.1.7 × 1.6 =
  22. 22.0.92 × 2.5 =
  23. 23.0.41 × 2.5 =
  24. 24.0.22 × 0.5 =
  25. 25.0.08 × 3.9 =
  26. 26.0.6 × 0.3 =
  27. 27.1.7 × 0.38 =
  28. 28.0.74 × 1.8 =
  29. 29.0.88 × 1.6 =
  30. 30.9.2 × 0.12 =
  31. 31.8.1 × 1.7 =
  32. 32.0.21 × 2.6 =
  33. 33.0.7 × 0.02 =
  34. 34.0.12 × 1.2 =
  35. 35.7.3 × 0.13 =
  36. 36.7.1 × 3.9 =
  37. 37.0.07 × 2.2 =
  38. 38.0.65 × 1.2 =
  39. 39.1.3 × 0.26 =
  40. 40.0.95 × 1.1 =

Answer key

  1. 5.64
  2. 8.05
  3. 2.16
  4. 0.744
  5. 2.067
  6. 2.82
  7. 2.21
  8. 0.252
  9. 0.054
  10. 2.025
  11. 0.102
  12. 0.209
  13. 24
  14. 2.156
  15. 1.037
  16. 6.37
  17. 30.07
  18. 2.844
  19. 0.651
  20. 0.087
  21. 2.72
  22. 2.3
  23. 1.025
  24. 0.11
  25. 0.312
  26. 0.18
  27. 0.646
  28. 1.332
  29. 1.408
  30. 1.104
  31. 13.77
  32. 0.546
  33. 0.014
  34. 0.144
  35. 0.949
  36. 27.69
  37. 0.154
  38. 0.78
  39. 0.338
  40. 1.045

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