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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 851 · 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. 2.13 × 15 =
  3. 3.46 × 15 =
  4. 4.37 × 15 =
  5. 5.19 × 15 =
  6. 6.9 × 15 =
  7. 7.44 × 15 =
  8. 8.27 × 15 =
  9. 9.61 × 15 =
  10. 10.32 × 15 =
  11. 11.38 × 15 =
  12. 12.14 × 15 =
  13. 13.28 × 15 =
  14. 14.19 × 15 =
  15. 15.23 × 15 =
  16. 16.9 × 15 =
  17. 17.63 × 15 =
  18. 18.6 × 15 =
  19. 19.17 × 15 =
  20. 20.40 × 15 =
  21. 21.35 × 15 =
  22. 22.61 × 15 =
  23. 23.56 × 15 =
  24. 24.6 × 15 =
  25. 25.20 × 15 =
  26. 26.59 × 15 =
  27. 27.54 × 15 =
  28. 28.59 × 15 =
  29. 29.36 × 15 =
  30. 30.59 × 15 =
  31. 31.46 × 15 =
  32. 32.18 × 15 =
  33. 33.10 × 15 =
  34. 34.36 × 15 =
  35. 35.35 × 15 =
  36. 36.26 × 15 =
  37. 37.64 × 15 =
  38. 38.5 × 15 =
  39. 39.34 × 15 =
  40. 40.61 × 15 =

Answer key

  1. 90
  2. 195
  3. 690
  4. 555
  5. 285
  6. 135
  7. 660
  8. 405
  9. 915
  10. 480
  11. 570
  12. 210
  13. 420
  14. 285
  15. 345
  16. 135
  17. 945
  18. 90
  19. 255
  20. 600
  21. 525
  22. 915
  23. 840
  24. 90
  25. 300
  26. 885
  27. 810
  28. 885
  29. 540
  30. 885
  31. 690
  32. 270
  33. 150
  34. 540
  35. 525
  36. 390
  37. 960
  38. 75
  39. 510
  40. 915

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