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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 3 · 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. 1.56 × 15 =
  2. 2.11 × 15 =
  3. 3.61 × 15 =
  4. 4.18 × 15 =
  5. 5.49 × 15 =
  6. 6.63 × 15 =
  7. 7.16 × 15 =
  8. 8.64 × 15 =
  9. 9.27 × 15 =
  10. 10.54 × 15 =
  11. 11.14 × 15 =
  12. 12.7 × 15 =
  13. 13.7 × 15 =
  14. 14.33 × 15 =
  15. 15.12 × 15 =
  16. 16.54 × 15 =
  17. 17.21 × 15 =
  18. 18.4 × 15 =
  19. 19.39 × 15 =
  20. 20.18 × 15 =
  21. 21.41 × 15 =
  22. 22.31 × 15 =
  23. 23.15 × 15 =
  24. 24.60 × 15 =
  25. 25.21 × 15 =
  26. 26.64 × 15 =
  27. 27.4 × 15 =
  28. 28.5 × 15 =
  29. 29.44 × 15 =
  30. 30.29 × 15 =
  31. 31.28 × 15 =
  32. 32.54 × 15 =
  33. 33.5 × 15 =
  34. 34.16 × 15 =
  35. 35.57 × 15 =
  36. 36.64 × 15 =
  37. 37.8 × 15 =
  38. 38.33 × 15 =
  39. 39.30 × 15 =
  40. 40.31 × 15 =

Answer key

  1. 840
  2. 165
  3. 915
  4. 270
  5. 735
  6. 945
  7. 240
  8. 960
  9. 405
  10. 810
  11. 210
  12. 105
  13. 105
  14. 495
  15. 180
  16. 810
  17. 315
  18. 60
  19. 585
  20. 270
  21. 615
  22. 465
  23. 225
  24. 900
  25. 315
  26. 960
  27. 60
  28. 75
  29. 660
  30. 435
  31. 420
  32. 810
  33. 75
  34. 240
  35. 855
  36. 960
  37. 120
  38. 495
  39. 450
  40. 465

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