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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 468 · 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. 1.24 × 15 =
  2. 2.61 × 15 =
  3. 3.56 × 15 =
  4. 4.59 × 15 =
  5. 5.26 × 15 =
  6. 6.52 × 15 =
  7. 7.29 × 15 =
  8. 8.58 × 15 =
  9. 9.55 × 15 =
  10. 10.44 × 15 =
  11. 11.43 × 15 =
  12. 12.60 × 15 =
  13. 13.44 × 15 =
  14. 14.31 × 15 =
  15. 15.14 × 15 =
  16. 16.54 × 15 =
  17. 17.64 × 15 =
  18. 18.25 × 15 =
  19. 19.31 × 15 =
  20. 20.46 × 15 =
  21. 21.10 × 15 =
  22. 22.41 × 15 =
  23. 23.48 × 15 =
  24. 24.28 × 15 =
  25. 25.25 × 15 =
  26. 26.7 × 15 =
  27. 27.39 × 15 =
  28. 28.23 × 15 =
  29. 29.45 × 15 =
  30. 30.34 × 15 =
  31. 31.8 × 15 =
  32. 32.42 × 15 =
  33. 33.24 × 15 =
  34. 34.56 × 15 =
  35. 35.10 × 15 =
  36. 36.23 × 15 =
  37. 37.50 × 15 =
  38. 38.18 × 15 =
  39. 39.4 × 15 =
  40. 40.20 × 15 =

Answer key

  1. 360
  2. 915
  3. 840
  4. 885
  5. 390
  6. 780
  7. 435
  8. 870
  9. 825
  10. 660
  11. 645
  12. 900
  13. 660
  14. 465
  15. 210
  16. 810
  17. 960
  18. 375
  19. 465
  20. 690
  21. 150
  22. 615
  23. 720
  24. 420
  25. 375
  26. 105
  27. 585
  28. 345
  29. 675
  30. 510
  31. 120
  32. 630
  33. 360
  34. 840
  35. 150
  36. 345
  37. 750
  38. 270
  39. 60
  40. 300

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