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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 775 · 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. 1.34 × 15 =
  2. 2.30 × 15 =
  3. 3.44 × 15 =
  4. 4.48 × 15 =
  5. 5.37 × 15 =
  6. 6.16 × 15 =
  7. 7.43 × 15 =
  8. 8.8 × 15 =
  9. 9.37 × 15 =
  10. 10.43 × 15 =
  11. 11.19 × 15 =
  12. 12.19 × 15 =
  13. 13.52 × 15 =
  14. 14.48 × 15 =
  15. 15.31 × 15 =
  16. 16.49 × 15 =
  17. 17.6 × 15 =
  18. 18.44 × 15 =
  19. 19.57 × 15 =
  20. 20.17 × 15 =
  21. 21.45 × 15 =
  22. 22.60 × 15 =
  23. 23.34 × 15 =
  24. 24.31 × 15 =
  25. 25.11 × 15 =
  26. 26.49 × 15 =
  27. 27.26 × 15 =
  28. 28.17 × 15 =
  29. 29.20 × 15 =
  30. 30.62 × 15 =
  31. 31.53 × 15 =
  32. 32.54 × 15 =
  33. 33.34 × 15 =
  34. 34.24 × 15 =
  35. 35.26 × 15 =
  36. 36.36 × 15 =
  37. 37.32 × 15 =
  38. 38.9 × 15 =
  39. 39.12 × 15 =
  40. 40.43 × 15 =

Answer key

  1. 510
  2. 450
  3. 660
  4. 720
  5. 555
  6. 240
  7. 645
  8. 120
  9. 555
  10. 645
  11. 285
  12. 285
  13. 780
  14. 720
  15. 465
  16. 735
  17. 90
  18. 660
  19. 855
  20. 255
  21. 675
  22. 900
  23. 510
  24. 465
  25. 165
  26. 735
  27. 390
  28. 255
  29. 300
  30. 930
  31. 795
  32. 810
  33. 510
  34. 360
  35. 390
  36. 540
  37. 480
  38. 135
  39. 180
  40. 645

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