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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 483 · 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. 1.46 × 15 =
  2. 2.47 × 15 =
  3. 3.21 × 15 =
  4. 4.38 × 15 =
  5. 5.43 × 15 =
  6. 6.29 × 15 =
  7. 7.14 × 15 =
  8. 8.16 × 15 =
  9. 9.59 × 15 =
  10. 10.7 × 15 =
  11. 11.30 × 15 =
  12. 12.18 × 15 =
  13. 13.58 × 15 =
  14. 14.58 × 15 =
  15. 15.49 × 15 =
  16. 16.41 × 15 =
  17. 17.63 × 15 =
  18. 18.22 × 15 =
  19. 19.58 × 15 =
  20. 20.16 × 15 =
  21. 21.14 × 15 =
  22. 22.5 × 15 =
  23. 23.64 × 15 =
  24. 24.58 × 15 =
  25. 25.50 × 15 =
  26. 26.53 × 15 =
  27. 27.34 × 15 =
  28. 28.47 × 15 =
  29. 29.29 × 15 =
  30. 30.49 × 15 =
  31. 31.31 × 15 =
  32. 32.61 × 15 =
  33. 33.23 × 15 =
  34. 34.33 × 15 =
  35. 35.21 × 15 =
  36. 36.18 × 15 =
  37. 37.44 × 15 =
  38. 38.27 × 15 =
  39. 39.64 × 15 =
  40. 40.6 × 15 =

Answer key

  1. 690
  2. 705
  3. 315
  4. 570
  5. 645
  6. 435
  7. 210
  8. 240
  9. 885
  10. 105
  11. 450
  12. 270
  13. 870
  14. 870
  15. 735
  16. 615
  17. 945
  18. 330
  19. 870
  20. 240
  21. 210
  22. 75
  23. 960
  24. 870
  25. 750
  26. 795
  27. 510
  28. 705
  29. 435
  30. 735
  31. 465
  32. 915
  33. 345
  34. 495
  35. 315
  36. 270
  37. 660
  38. 405
  39. 960
  40. 90

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