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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 822 · 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. 1.62 × 15 =
  2. 2.56 × 15 =
  3. 3.36 × 15 =
  4. 4.6 × 15 =
  5. 5.38 × 15 =
  6. 6.46 × 15 =
  7. 7.26 × 15 =
  8. 8.32 × 15 =
  9. 9.53 × 15 =
  10. 10.12 × 15 =
  11. 11.27 × 15 =
  12. 12.13 × 15 =
  13. 13.37 × 15 =
  14. 14.25 × 15 =
  15. 15.38 × 15 =
  16. 16.59 × 15 =
  17. 17.27 × 15 =
  18. 18.17 × 15 =
  19. 19.25 × 15 =
  20. 20.32 × 15 =
  21. 21.63 × 15 =
  22. 22.38 × 15 =
  23. 23.33 × 15 =
  24. 24.58 × 15 =
  25. 25.20 × 15 =
  26. 26.46 × 15 =
  27. 27.34 × 15 =
  28. 28.24 × 15 =
  29. 29.30 × 15 =
  30. 30.31 × 15 =
  31. 31.61 × 15 =
  32. 32.11 × 15 =
  33. 33.15 × 15 =
  34. 34.6 × 15 =
  35. 35.60 × 15 =
  36. 36.38 × 15 =
  37. 37.23 × 15 =
  38. 38.20 × 15 =
  39. 39.44 × 15 =
  40. 40.56 × 15 =

Answer key

  1. 930
  2. 840
  3. 540
  4. 90
  5. 570
  6. 690
  7. 390
  8. 480
  9. 795
  10. 180
  11. 405
  12. 195
  13. 555
  14. 375
  15. 570
  16. 885
  17. 405
  18. 255
  19. 375
  20. 480
  21. 945
  22. 570
  23. 495
  24. 870
  25. 300
  26. 690
  27. 510
  28. 360
  29. 450
  30. 465
  31. 915
  32. 165
  33. 225
  34. 90
  35. 900
  36. 570
  37. 345
  38. 300
  39. 660
  40. 840

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