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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 802 · 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. 1.5.1 × 1.1 =
  2. 2.8.2 × 2.3 =
  3. 3.0.41 × 1.3 =
  4. 4.0.99 × 1.3 =
  5. 5.0.84 × 1.4 =
  6. 6.7.4 × 0.21 =
  7. 7.0.08 × 3.4 =
  8. 8.0.63 × 3.1 =
  9. 9.0.51 × 2.3 =
  10. 10.5.1 × 0.11 =
  11. 11.0.4 × 3.7 =
  12. 12.0.83 × 0.7 =
  13. 13.0.11 × 3.5 =
  14. 14.0.19 × 1.2 =
  15. 15.1.1 × 0.9 =
  16. 16.0.47 × 0.5 =
  17. 17.1.1 × 0.05 =
  18. 18.0.73 × 2.2 =
  19. 19.0.13 × 3.4 =
  20. 20.1.1 × 0.28 =
  21. 21.2.9 × 0.2 =
  22. 22.5.8 × 0.5 =
  23. 23.0.69 × 3.4 =
  24. 24.0.29 × 3.7 =
  25. 25.1.8 × 3.5 =
  26. 26.0.36 × 2.8 =
  27. 27.1.1 × 3.2 =
  28. 28.2.1 × 3.5 =
  29. 29.7.5 × 2.8 =
  30. 30.0.23 × 2.3 =
  31. 31.0.24 × 1.5 =
  32. 32.0.18 × 3.5 =
  33. 33.6.4 × 3.1 =
  34. 34.2.9 × 2.2 =
  35. 35.9.9 × 1.3 =
  36. 36.6.7 × 2.2 =
  37. 37.6.3 × 0.34 =
  38. 38.7.5 × 3.1 =
  39. 39.0.46 × 3.4 =
  40. 40.0.97 × 2.7 =

Answer key

  1. 5.61
  2. 18.86
  3. 0.533
  4. 1.287
  5. 1.176
  6. 1.554
  7. 0.272
  8. 1.953
  9. 1.173
  10. 0.561
  11. 1.48
  12. 0.581
  13. 0.385
  14. 0.228
  15. 0.99
  16. 0.235
  17. 0.055
  18. 1.606
  19. 0.442
  20. 0.308
  21. 0.58
  22. 2.9
  23. 2.346
  24. 1.073
  25. 6.3
  26. 1.008
  27. 3.52
  28. 7.35
  29. 21
  30. 0.529
  31. 0.36
  32. 0.63
  33. 19.84
  34. 6.38
  35. 12.87
  36. 14.74
  37. 2.142
  38. 23.25
  39. 1.564
  40. 2.619

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