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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 379 · 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. 1.19 × 15 =
  2. 2.35 × 15 =
  3. 3.27 × 15 =
  4. 4.34 × 15 =
  5. 5.21 × 15 =
  6. 6.25 × 15 =
  7. 7.54 × 15 =
  8. 8.26 × 15 =
  9. 9.34 × 15 =
  10. 10.59 × 15 =
  11. 11.48 × 15 =
  12. 12.4 × 15 =
  13. 13.30 × 15 =
  14. 14.35 × 15 =
  15. 15.29 × 15 =
  16. 16.18 × 15 =
  17. 17.41 × 15 =
  18. 18.17 × 15 =
  19. 19.51 × 15 =
  20. 20.14 × 15 =
  21. 21.35 × 15 =
  22. 22.42 × 15 =
  23. 23.8 × 15 =
  24. 24.14 × 15 =
  25. 25.9 × 15 =
  26. 26.54 × 15 =
  27. 27.27 × 15 =
  28. 28.59 × 15 =
  29. 29.5 × 15 =
  30. 30.11 × 15 =
  31. 31.12 × 15 =
  32. 32.21 × 15 =
  33. 33.45 × 15 =
  34. 34.4 × 15 =
  35. 35.53 × 15 =
  36. 36.61 × 15 =
  37. 37.36 × 15 =
  38. 38.13 × 15 =
  39. 39.5 × 15 =
  40. 40.26 × 15 =

Answer key

  1. 285
  2. 525
  3. 405
  4. 510
  5. 315
  6. 375
  7. 810
  8. 390
  9. 510
  10. 885
  11. 720
  12. 60
  13. 450
  14. 525
  15. 435
  16. 270
  17. 615
  18. 255
  19. 765
  20. 210
  21. 525
  22. 630
  23. 120
  24. 210
  25. 135
  26. 810
  27. 405
  28. 885
  29. 75
  30. 165
  31. 180
  32. 315
  33. 675
  34. 60
  35. 795
  36. 915
  37. 540
  38. 195
  39. 75
  40. 390

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