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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 875 · 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. 1.52 × 15 =
  2. 2.37 × 15 =
  3. 3.17 × 15 =
  4. 4.31 × 15 =
  5. 5.57 × 15 =
  6. 6.19 × 15 =
  7. 7.54 × 15 =
  8. 8.33 × 15 =
  9. 9.53 × 15 =
  10. 10.19 × 15 =
  11. 11.48 × 15 =
  12. 12.32 × 15 =
  13. 13.28 × 15 =
  14. 14.10 × 15 =
  15. 15.34 × 15 =
  16. 16.54 × 15 =
  17. 17.62 × 15 =
  18. 18.25 × 15 =
  19. 19.30 × 15 =
  20. 20.43 × 15 =
  21. 21.48 × 15 =
  22. 22.32 × 15 =
  23. 23.25 × 15 =
  24. 24.47 × 15 =
  25. 25.21 × 15 =
  26. 26.56 × 15 =
  27. 27.64 × 15 =
  28. 28.43 × 15 =
  29. 29.52 × 15 =
  30. 30.49 × 15 =
  31. 31.50 × 15 =
  32. 32.16 × 15 =
  33. 33.11 × 15 =
  34. 34.40 × 15 =
  35. 35.60 × 15 =
  36. 36.42 × 15 =
  37. 37.5 × 15 =
  38. 38.24 × 15 =
  39. 39.47 × 15 =
  40. 40.12 × 15 =

Answer key

  1. 780
  2. 555
  3. 255
  4. 465
  5. 855
  6. 285
  7. 810
  8. 495
  9. 795
  10. 285
  11. 720
  12. 480
  13. 420
  14. 150
  15. 510
  16. 810
  17. 930
  18. 375
  19. 450
  20. 645
  21. 720
  22. 480
  23. 375
  24. 705
  25. 315
  26. 840
  27. 960
  28. 645
  29. 780
  30. 735
  31. 750
  32. 240
  33. 165
  34. 600
  35. 900
  36. 630
  37. 75
  38. 360
  39. 705
  40. 180

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