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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 88 · 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. 1.3.9 × 1.1 =
  2. 2.8.6 × 1.5 =
  3. 3.1.5 × 0.11 =
  4. 4.0.78 × 3.3 =
  5. 5.0.66 × 0.2 =
  6. 6.8.1 × 0.13 =
  7. 7.0.28 × 0.4 =
  8. 8.0.21 × 1.2 =
  9. 9.6.6 × 1.2 =
  10. 10.0.87 × 2.8 =
  11. 11.0.52 × 3.3 =
  12. 12.0.96 × 3.9 =
  13. 13.0.07 × 0.6 =
  14. 14.4.6 × 0.28 =
  15. 15.8.5 × 0.07 =
  16. 16.0.08 × 3.9 =
  17. 17.0.63 × 2.9 =
  18. 18.0.65 × 0.7 =
  19. 19.0.7 × 1.2 =
  20. 20.0.27 × 1.9 =
  21. 21.0.92 × 2.4 =
  22. 22.0.99 × 2.7 =
  23. 23.5.1 × 2.1 =
  24. 24.0.45 × 2.5 =
  25. 25.2.5 × 1.4 =
  26. 26.7.8 × 0.27 =
  27. 27.0.31 × 3.1 =
  28. 28.0.09 × 2.3 =
  29. 29.0.65 × 2.7 =
  30. 30.0.52 × 0.4 =
  31. 31.6.8 × 0.7 =
  32. 32.0.81 × 3.9 =
  33. 33.6.3 × 3.1 =
  34. 34.0.71 × 0.8 =
  35. 35.0.26 × 3.6 =
  36. 36.2.9 × 0.27 =
  37. 37.2.8 × 3.3 =
  38. 38.3.6 × 0.35 =
  39. 39.2.6 × 0.38 =
  40. 40.0.67 × 0.2 =

Answer key

  1. 4.29
  2. 12.9
  3. 0.165
  4. 2.574
  5. 0.132
  6. 1.053
  7. 0.112
  8. 0.252
  9. 7.92
  10. 2.436
  11. 1.716
  12. 3.744
  13. 0.042
  14. 1.288
  15. 0.595
  16. 0.312
  17. 1.827
  18. 0.455
  19. 0.84
  20. 0.513
  21. 2.208
  22. 2.673
  23. 10.71
  24. 1.125
  25. 3.5
  26. 2.106
  27. 0.961
  28. 0.207
  29. 1.755
  30. 0.208
  31. 4.76
  32. 3.159
  33. 19.53
  34. 0.568
  35. 0.936
  36. 0.783
  37. 9.24
  38. 1.26
  39. 0.988
  40. 0.134

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