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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 82 · 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. 1.9.6 × 0.04 =
  2. 2.7.1 × 0.16 =
  3. 3.4.3 × 3.5 =
  4. 4.0.68 × 2.1 =
  5. 5.0.3 × 1.5 =
  6. 6.8.5 × 1.1 =
  7. 7.5.7 × 0.05 =
  8. 8.3.4 × 0.32 =
  9. 9.5.3 × 2.1 =
  10. 10.7.4 × 2.5 =
  11. 11.3.2 × 0.07 =
  12. 12.0.81 × 1.6 =
  13. 13.0.27 × 1.1 =
  14. 14.3.8 × 0.11 =
  15. 15.2.2 × 3.6 =
  16. 16.0.48 × 0.2 =
  17. 17.0.31 × 0.4 =
  18. 18.0.3 × 2.1 =
  19. 19.2.1 × 1.4 =
  20. 20.0.4 × 1.7 =
  21. 21.0.07 × 2.6 =
  22. 22.0.06 × 0.5 =
  23. 23.0.41 × 2.9 =
  24. 24.0.15 × 0.4 =
  25. 25.8.9 × 2.1 =
  26. 26.0.21 × 1.6 =
  27. 27.8.7 × 0.09 =
  28. 28.0.06 × 0.3 =
  29. 29.0.42 × 0.9 =
  30. 30.3.1 × 0.36 =
  31. 31.2.7 × 0.04 =
  32. 32.4.6 × 0.23 =
  33. 33.4.3 × 0.8 =
  34. 34.0.91 × 2.4 =
  35. 35.0.44 × 2.8 =
  36. 36.9.7 × 0.07 =
  37. 37.0.52 × 0.3 =
  38. 38.9.6 × 0.23 =
  39. 39.0.44 × 2.2 =
  40. 40.0.04 × 1.6 =

Answer key

  1. 0.384
  2. 1.136
  3. 15.05
  4. 1.428
  5. 0.45
  6. 9.35
  7. 0.285
  8. 1.088
  9. 11.13
  10. 18.5
  11. 0.224
  12. 1.296
  13. 0.297
  14. 0.418
  15. 7.92
  16. 0.096
  17. 0.124
  18. 0.63
  19. 2.94
  20. 0.68
  21. 0.182
  22. 0.03
  23. 1.189
  24. 0.06
  25. 18.69
  26. 0.336
  27. 0.783
  28. 0.018
  29. 0.378
  30. 1.116
  31. 0.108
  32. 1.058
  33. 3.44
  34. 2.184
  35. 1.232
  36. 0.679
  37. 0.156
  38. 2.208
  39. 0.968
  40. 0.064

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