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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 413 · 40 questions
TalentJR

The fast method (Ten and half again): Multiply by 10: 46 → 460. Halve that answer: half of 460 is 230. Add the two: 460 + 230 = 690.

NameDateTime takenScore ___ / 40
  1. 1.62 × 15 =
  2. 2.18 × 15 =
  3. 3.16 × 15 =
  4. 4.50 × 15 =
  5. 5.36 × 15 =
  6. 6.40 × 15 =
  7. 7.23 × 15 =
  8. 8.55 × 15 =
  9. 9.21 × 15 =
  10. 10.21 × 15 =
  11. 11.12 × 15 =
  12. 12.60 × 15 =
  13. 13.39 × 15 =
  14. 14.24 × 15 =
  15. 15.21 × 15 =
  16. 16.41 × 15 =
  17. 17.44 × 15 =
  18. 18.51 × 15 =
  19. 19.23 × 15 =
  20. 20.53 × 15 =
  21. 21.64 × 15 =
  22. 22.36 × 15 =
  23. 23.25 × 15 =
  24. 24.54 × 15 =
  25. 25.46 × 15 =
  26. 26.13 × 15 =
  27. 27.7 × 15 =
  28. 28.4 × 15 =
  29. 29.10 × 15 =
  30. 30.34 × 15 =
  31. 31.21 × 15 =
  32. 32.56 × 15 =
  33. 33.44 × 15 =
  34. 34.41 × 15 =
  35. 35.63 × 15 =
  36. 36.48 × 15 =
  37. 37.63 × 15 =
  38. 38.32 × 15 =
  39. 39.24 × 15 =
  40. 40.18 × 15 =

Answer key

  1. 930
  2. 270
  3. 240
  4. 750
  5. 540
  6. 600
  7. 345
  8. 825
  9. 315
  10. 315
  11. 180
  12. 900
  13. 585
  14. 360
  15. 315
  16. 615
  17. 660
  18. 765
  19. 345
  20. 795
  21. 960
  22. 540
  23. 375
  24. 810
  25. 690
  26. 195
  27. 105
  28. 60
  29. 150
  30. 510
  31. 315
  32. 840
  33. 660
  34. 615
  35. 945
  36. 720
  37. 945
  38. 480
  39. 360
  40. 270

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