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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 204 · 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. 1.13 × 15 =
  2. 2.49 × 15 =
  3. 3.37 × 15 =
  4. 4.6 × 15 =
  5. 5.39 × 15 =
  6. 6.4 × 15 =
  7. 7.9 × 15 =
  8. 8.62 × 15 =
  9. 9.29 × 15 =
  10. 10.49 × 15 =
  11. 11.45 × 15 =
  12. 12.44 × 15 =
  13. 13.9 × 15 =
  14. 14.17 × 15 =
  15. 15.30 × 15 =
  16. 16.55 × 15 =
  17. 17.7 × 15 =
  18. 18.46 × 15 =
  19. 19.46 × 15 =
  20. 20.26 × 15 =
  21. 21.33 × 15 =
  22. 22.43 × 15 =
  23. 23.32 × 15 =
  24. 24.4 × 15 =
  25. 25.12 × 15 =
  26. 26.10 × 15 =
  27. 27.16 × 15 =
  28. 28.38 × 15 =
  29. 29.57 × 15 =
  30. 30.10 × 15 =
  31. 31.31 × 15 =
  32. 32.40 × 15 =
  33. 33.10 × 15 =
  34. 34.33 × 15 =
  35. 35.56 × 15 =
  36. 36.28 × 15 =
  37. 37.19 × 15 =
  38. 38.55 × 15 =
  39. 39.6 × 15 =
  40. 40.28 × 15 =

Answer key

  1. 195
  2. 735
  3. 555
  4. 90
  5. 585
  6. 60
  7. 135
  8. 930
  9. 435
  10. 735
  11. 675
  12. 660
  13. 135
  14. 255
  15. 450
  16. 825
  17. 105
  18. 690
  19. 690
  20. 390
  21. 495
  22. 645
  23. 480
  24. 60
  25. 180
  26. 150
  27. 240
  28. 570
  29. 855
  30. 150
  31. 465
  32. 600
  33. 150
  34. 495
  35. 840
  36. 420
  37. 285
  38. 825
  39. 90
  40. 420

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