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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 190 · 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. 1.64 × 15 =
  2. 2.11 × 15 =
  3. 3.24 × 15 =
  4. 4.38 × 15 =
  5. 5.25 × 15 =
  6. 6.63 × 15 =
  7. 7.33 × 15 =
  8. 8.25 × 15 =
  9. 9.59 × 15 =
  10. 10.61 × 15 =
  11. 11.13 × 15 =
  12. 12.63 × 15 =
  13. 13.19 × 15 =
  14. 14.59 × 15 =
  15. 15.52 × 15 =
  16. 16.55 × 15 =
  17. 17.47 × 15 =
  18. 18.59 × 15 =
  19. 19.57 × 15 =
  20. 20.36 × 15 =
  21. 21.44 × 15 =
  22. 22.38 × 15 =
  23. 23.16 × 15 =
  24. 24.9 × 15 =
  25. 25.48 × 15 =
  26. 26.62 × 15 =
  27. 27.34 × 15 =
  28. 28.18 × 15 =
  29. 29.14 × 15 =
  30. 30.42 × 15 =
  31. 31.41 × 15 =
  32. 32.30 × 15 =
  33. 33.12 × 15 =
  34. 34.18 × 15 =
  35. 35.36 × 15 =
  36. 36.52 × 15 =
  37. 37.22 × 15 =
  38. 38.29 × 15 =
  39. 39.25 × 15 =
  40. 40.5 × 15 =

Answer key

  1. 960
  2. 165
  3. 360
  4. 570
  5. 375
  6. 945
  7. 495
  8. 375
  9. 885
  10. 915
  11. 195
  12. 945
  13. 285
  14. 885
  15. 780
  16. 825
  17. 705
  18. 885
  19. 855
  20. 540
  21. 660
  22. 570
  23. 240
  24. 135
  25. 720
  26. 930
  27. 510
  28. 270
  29. 210
  30. 630
  31. 615
  32. 450
  33. 180
  34. 270
  35. 540
  36. 780
  37. 330
  38. 435
  39. 375
  40. 75

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