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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 70 · 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. 1.26 × 15 =
  2. 2.60 × 15 =
  3. 3.38 × 15 =
  4. 4.22 × 15 =
  5. 5.46 × 15 =
  6. 6.40 × 15 =
  7. 7.4 × 15 =
  8. 8.49 × 15 =
  9. 9.58 × 15 =
  10. 10.57 × 15 =
  11. 11.25 × 15 =
  12. 12.24 × 15 =
  13. 13.6 × 15 =
  14. 14.60 × 15 =
  15. 15.42 × 15 =
  16. 16.58 × 15 =
  17. 17.32 × 15 =
  18. 18.11 × 15 =
  19. 19.33 × 15 =
  20. 20.17 × 15 =
  21. 21.9 × 15 =
  22. 22.46 × 15 =
  23. 23.37 × 15 =
  24. 24.45 × 15 =
  25. 25.38 × 15 =
  26. 26.48 × 15 =
  27. 27.19 × 15 =
  28. 28.61 × 15 =
  29. 29.53 × 15 =
  30. 30.10 × 15 =
  31. 31.10 × 15 =
  32. 32.49 × 15 =
  33. 33.8 × 15 =
  34. 34.18 × 15 =
  35. 35.57 × 15 =
  36. 36.11 × 15 =
  37. 37.59 × 15 =
  38. 38.19 × 15 =
  39. 39.30 × 15 =
  40. 40.15 × 15 =

Answer key

  1. 390
  2. 900
  3. 570
  4. 330
  5. 690
  6. 600
  7. 60
  8. 735
  9. 870
  10. 855
  11. 375
  12. 360
  13. 90
  14. 900
  15. 630
  16. 870
  17. 480
  18. 165
  19. 495
  20. 255
  21. 135
  22. 690
  23. 555
  24. 675
  25. 570
  26. 720
  27. 285
  28. 915
  29. 795
  30. 150
  31. 150
  32. 735
  33. 120
  34. 270
  35. 855
  36. 165
  37. 885
  38. 285
  39. 450
  40. 225

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