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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 140 · 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. 1.6.1 × 1.1 =
  2. 2.4.8 × 1.1 =
  3. 3.0.26 × 2.4 =
  4. 4.4.5 × 2.2 =
  5. 5.7.8 × 0.29 =
  6. 6.1.5 × 0.7 =
  7. 7.5.5 × 0.7 =
  8. 8.0.89 × 1.4 =
  9. 9.0.66 × 3.2 =
  10. 10.2.2 × 0.25 =
  11. 11.0.47 × 3.5 =
  12. 12.0.6 × 3.8 =
  13. 13.0.17 × 1.2 =
  14. 14.0.18 × 1.6 =
  15. 15.9.1 × 3.9 =
  16. 16.4.8 × 0.21 =
  17. 17.0.09 × 3.7 =
  18. 18.0.51 × 0.5 =
  19. 19.0.07 × 3.5 =
  20. 20.0.45 × 1.7 =
  21. 21.6.6 × 0.24 =
  22. 22.4.2 × 1.7 =
  23. 23.6.8 × 0.4 =
  24. 24.0.28 × 0.7 =
  25. 25.0.45 × 1.6 =
  26. 26.1.2 × 0.13 =
  27. 27.0.65 × 2.1 =
  28. 28.8.9 × 0.7 =
  29. 29.4.3 × 0.12 =
  30. 30.0.31 × 2.6 =
  31. 31.0.14 × 3.9 =
  32. 32.3.5 × 0.18 =
  33. 33.2.8 × 1.6 =
  34. 34.0.9 × 0.06 =
  35. 35.0.81 × 2.3 =
  36. 36.7.8 × 0.27 =
  37. 37.1.1 × 0.22 =
  38. 38.3.1 × 0.36 =
  39. 39.0.68 × 1.7 =
  40. 40.1.1 × 0.12 =

Answer key

  1. 6.71
  2. 5.28
  3. 0.624
  4. 9.9
  5. 2.262
  6. 1.05
  7. 3.85
  8. 1.246
  9. 2.112
  10. 0.55
  11. 1.645
  12. 2.28
  13. 0.204
  14. 0.288
  15. 35.49
  16. 1.008
  17. 0.333
  18. 0.255
  19. 0.245
  20. 0.765
  21. 1.584
  22. 7.14
  23. 2.72
  24. 0.196
  25. 0.72
  26. 0.156
  27. 1.365
  28. 6.23
  29. 0.516
  30. 0.806
  31. 0.546
  32. 0.63
  33. 4.48
  34. 0.054
  35. 1.863
  36. 2.106
  37. 0.242
  38. 1.116
  39. 1.156
  40. 0.132

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