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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 620 · 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. 1.26 × 15 =
  2. 2.52 × 15 =
  3. 3.47 × 15 =
  4. 4.16 × 15 =
  5. 5.54 × 15 =
  6. 6.50 × 15 =
  7. 7.11 × 15 =
  8. 8.53 × 15 =
  9. 9.27 × 15 =
  10. 10.46 × 15 =
  11. 11.45 × 15 =
  12. 12.53 × 15 =
  13. 13.30 × 15 =
  14. 14.11 × 15 =
  15. 15.50 × 15 =
  16. 16.53 × 15 =
  17. 17.49 × 15 =
  18. 18.41 × 15 =
  19. 19.47 × 15 =
  20. 20.47 × 15 =
  21. 21.55 × 15 =
  22. 22.29 × 15 =
  23. 23.49 × 15 =
  24. 24.28 × 15 =
  25. 25.28 × 15 =
  26. 26.32 × 15 =
  27. 27.13 × 15 =
  28. 28.52 × 15 =
  29. 29.11 × 15 =
  30. 30.59 × 15 =
  31. 31.56 × 15 =
  32. 32.4 × 15 =
  33. 33.11 × 15 =
  34. 34.19 × 15 =
  35. 35.50 × 15 =
  36. 36.6 × 15 =
  37. 37.63 × 15 =
  38. 38.33 × 15 =
  39. 39.41 × 15 =
  40. 40.48 × 15 =

Answer key

  1. 390
  2. 780
  3. 705
  4. 240
  5. 810
  6. 750
  7. 165
  8. 795
  9. 405
  10. 690
  11. 675
  12. 795
  13. 450
  14. 165
  15. 750
  16. 795
  17. 735
  18. 615
  19. 705
  20. 705
  21. 825
  22. 435
  23. 735
  24. 420
  25. 420
  26. 480
  27. 195
  28. 780
  29. 165
  30. 885
  31. 840
  32. 60
  33. 165
  34. 285
  35. 750
  36. 90
  37. 945
  38. 495
  39. 615
  40. 720

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