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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 493 · 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. 1.32 × 15 =
  2. 2.53 × 15 =
  3. 3.39 × 15 =
  4. 4.7 × 15 =
  5. 5.28 × 15 =
  6. 6.29 × 15 =
  7. 7.53 × 15 =
  8. 8.52 × 15 =
  9. 9.34 × 15 =
  10. 10.52 × 15 =
  11. 11.28 × 15 =
  12. 12.15 × 15 =
  13. 13.27 × 15 =
  14. 14.54 × 15 =
  15. 15.62 × 15 =
  16. 16.15 × 15 =
  17. 17.47 × 15 =
  18. 18.51 × 15 =
  19. 19.11 × 15 =
  20. 20.11 × 15 =
  21. 21.35 × 15 =
  22. 22.9 × 15 =
  23. 23.25 × 15 =
  24. 24.24 × 15 =
  25. 25.5 × 15 =
  26. 26.24 × 15 =
  27. 27.53 × 15 =
  28. 28.54 × 15 =
  29. 29.52 × 15 =
  30. 30.21 × 15 =
  31. 31.61 × 15 =
  32. 32.18 × 15 =
  33. 33.52 × 15 =
  34. 34.11 × 15 =
  35. 35.18 × 15 =
  36. 36.52 × 15 =
  37. 37.29 × 15 =
  38. 38.44 × 15 =
  39. 39.8 × 15 =
  40. 40.28 × 15 =

Answer key

  1. 480
  2. 795
  3. 585
  4. 105
  5. 420
  6. 435
  7. 795
  8. 780
  9. 510
  10. 780
  11. 420
  12. 225
  13. 405
  14. 810
  15. 930
  16. 225
  17. 705
  18. 765
  19. 165
  20. 165
  21. 525
  22. 135
  23. 375
  24. 360
  25. 75
  26. 360
  27. 795
  28. 810
  29. 780
  30. 315
  31. 915
  32. 270
  33. 780
  34. 165
  35. 270
  36. 780
  37. 435
  38. 660
  39. 120
  40. 420

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