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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 196 · 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. 1.12 × 15 =
  2. 2.7 × 15 =
  3. 3.11 × 15 =
  4. 4.9 × 15 =
  5. 5.26 × 15 =
  6. 6.63 × 15 =
  7. 7.61 × 15 =
  8. 8.51 × 15 =
  9. 9.34 × 15 =
  10. 10.40 × 15 =
  11. 11.36 × 15 =
  12. 12.59 × 15 =
  13. 13.19 × 15 =
  14. 14.50 × 15 =
  15. 15.52 × 15 =
  16. 16.50 × 15 =
  17. 17.13 × 15 =
  18. 18.34 × 15 =
  19. 19.56 × 15 =
  20. 20.12 × 15 =
  21. 21.48 × 15 =
  22. 22.6 × 15 =
  23. 23.8 × 15 =
  24. 24.14 × 15 =
  25. 25.53 × 15 =
  26. 26.34 × 15 =
  27. 27.64 × 15 =
  28. 28.32 × 15 =
  29. 29.30 × 15 =
  30. 30.45 × 15 =
  31. 31.9 × 15 =
  32. 32.42 × 15 =
  33. 33.39 × 15 =
  34. 34.21 × 15 =
  35. 35.26 × 15 =
  36. 36.59 × 15 =
  37. 37.38 × 15 =
  38. 38.22 × 15 =
  39. 39.51 × 15 =
  40. 40.27 × 15 =

Answer key

  1. 180
  2. 105
  3. 165
  4. 135
  5. 390
  6. 945
  7. 915
  8. 765
  9. 510
  10. 600
  11. 540
  12. 885
  13. 285
  14. 750
  15. 780
  16. 750
  17. 195
  18. 510
  19. 840
  20. 180
  21. 720
  22. 90
  23. 120
  24. 210
  25. 795
  26. 510
  27. 960
  28. 480
  29. 450
  30. 675
  31. 135
  32. 630
  33. 585
  34. 315
  35. 390
  36. 885
  37. 570
  38. 330
  39. 765
  40. 405

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