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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 661 · 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. 1.0.21 × 3.5 =
  2. 2.0.27 × 1.5 =
  3. 3.1.8 × 0.3 =
  4. 4.2.1 × 0.11 =
  5. 5.0.58 × 2.1 =
  6. 6.0.25 × 3.5 =
  7. 7.0.13 × 1.2 =
  8. 8.0.77 × 3.8 =
  9. 9.0.61 × 3.4 =
  10. 10.5.3 × 2.1 =
  11. 11.8.3 × 0.03 =
  12. 12.0.5 × 2.4 =
  13. 13.0.13 × 2.1 =
  14. 14.0.21 × 0.9 =
  15. 15.0.43 × 0.4 =
  16. 16.0.71 × 2.4 =
  17. 17.0.15 × 3.4 =
  18. 18.5.8 × 0.11 =
  19. 19.1.8 × 0.37 =
  20. 20.5.5 × 2.2 =
  21. 21.9.5 × 0.22 =
  22. 22.0.16 × 1.8 =
  23. 23.5.1 × 0.25 =
  24. 24.3.1 × 3.1 =
  25. 25.0.33 × 1.9 =
  26. 26.0.38 × 0.7 =
  27. 27.6.2 × 1.5 =
  28. 28.7.4 × 0.28 =
  29. 29.0.4 × 0.19 =
  30. 30.4.1 × 2.9 =
  31. 31.1.7 × 0.22 =
  32. 32.5.1 × 2.4 =
  33. 33.0.68 × 3.6 =
  34. 34.2.6 × 0.16 =
  35. 35.0.59 × 3.5 =
  36. 36.0.7 × 0.04 =
  37. 37.0.51 × 1.3 =
  38. 38.0.59 × 2.1 =
  39. 39.0.84 × 1.8 =
  40. 40.6.3 × 3.7 =

Answer key

  1. 0.735
  2. 0.405
  3. 0.54
  4. 0.231
  5. 1.218
  6. 0.875
  7. 0.156
  8. 2.926
  9. 2.074
  10. 11.13
  11. 0.249
  12. 1.2
  13. 0.273
  14. 0.189
  15. 0.172
  16. 1.704
  17. 0.51
  18. 0.638
  19. 0.666
  20. 12.1
  21. 2.09
  22. 0.288
  23. 1.275
  24. 9.61
  25. 0.627
  26. 0.266
  27. 9.3
  28. 2.072
  29. 0.076
  30. 11.89
  31. 0.374
  32. 12.24
  33. 2.448
  34. 0.416
  35. 2.065
  36. 0.028
  37. 0.663
  38. 1.239
  39. 1.512
  40. 23.31

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