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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 697 · 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. 1.6 × 15 =
  2. 2.23 × 15 =
  3. 3.54 × 15 =
  4. 4.7 × 15 =
  5. 5.5 × 15 =
  6. 6.32 × 15 =
  7. 7.17 × 15 =
  8. 8.54 × 15 =
  9. 9.16 × 15 =
  10. 10.49 × 15 =
  11. 11.14 × 15 =
  12. 12.34 × 15 =
  13. 13.22 × 15 =
  14. 14.49 × 15 =
  15. 15.11 × 15 =
  16. 16.11 × 15 =
  17. 17.15 × 15 =
  18. 18.40 × 15 =
  19. 19.4 × 15 =
  20. 20.38 × 15 =
  21. 21.22 × 15 =
  22. 22.29 × 15 =
  23. 23.36 × 15 =
  24. 24.7 × 15 =
  25. 25.26 × 15 =
  26. 26.9 × 15 =
  27. 27.8 × 15 =
  28. 28.12 × 15 =
  29. 29.22 × 15 =
  30. 30.32 × 15 =
  31. 31.59 × 15 =
  32. 32.35 × 15 =
  33. 33.6 × 15 =
  34. 34.22 × 15 =
  35. 35.58 × 15 =
  36. 36.53 × 15 =
  37. 37.62 × 15 =
  38. 38.28 × 15 =
  39. 39.28 × 15 =
  40. 40.51 × 15 =

Answer key

  1. 90
  2. 345
  3. 810
  4. 105
  5. 75
  6. 480
  7. 255
  8. 810
  9. 240
  10. 735
  11. 210
  12. 510
  13. 330
  14. 735
  15. 165
  16. 165
  17. 225
  18. 600
  19. 60
  20. 570
  21. 330
  22. 435
  23. 540
  24. 105
  25. 390
  26. 135
  27. 120
  28. 180
  29. 330
  30. 480
  31. 885
  32. 525
  33. 90
  34. 330
  35. 870
  36. 795
  37. 930
  38. 420
  39. 420
  40. 765

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