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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 283 · 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. 1.38 × 15 =
  2. 2.44 × 15 =
  3. 3.47 × 15 =
  4. 4.64 × 15 =
  5. 5.24 × 15 =
  6. 6.64 × 15 =
  7. 7.19 × 15 =
  8. 8.45 × 15 =
  9. 9.14 × 15 =
  10. 10.16 × 15 =
  11. 11.19 × 15 =
  12. 12.22 × 15 =
  13. 13.35 × 15 =
  14. 14.19 × 15 =
  15. 15.24 × 15 =
  16. 16.32 × 15 =
  17. 17.55 × 15 =
  18. 18.59 × 15 =
  19. 19.5 × 15 =
  20. 20.59 × 15 =
  21. 21.34 × 15 =
  22. 22.24 × 15 =
  23. 23.14 × 15 =
  24. 24.6 × 15 =
  25. 25.63 × 15 =
  26. 26.60 × 15 =
  27. 27.24 × 15 =
  28. 28.35 × 15 =
  29. 29.10 × 15 =
  30. 30.21 × 15 =
  31. 31.18 × 15 =
  32. 32.58 × 15 =
  33. 33.6 × 15 =
  34. 34.46 × 15 =
  35. 35.28 × 15 =
  36. 36.61 × 15 =
  37. 37.26 × 15 =
  38. 38.26 × 15 =
  39. 39.63 × 15 =
  40. 40.9 × 15 =

Answer key

  1. 570
  2. 660
  3. 705
  4. 960
  5. 360
  6. 960
  7. 285
  8. 675
  9. 210
  10. 240
  11. 285
  12. 330
  13. 525
  14. 285
  15. 360
  16. 480
  17. 825
  18. 885
  19. 75
  20. 885
  21. 510
  22. 360
  23. 210
  24. 90
  25. 945
  26. 900
  27. 360
  28. 525
  29. 150
  30. 315
  31. 270
  32. 870
  33. 90
  34. 690
  35. 420
  36. 915
  37. 390
  38. 390
  39. 945
  40. 135

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