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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 887 · 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. 1.20 × 15 =
  2. 2.46 × 15 =
  3. 3.8 × 15 =
  4. 4.63 × 15 =
  5. 5.27 × 15 =
  6. 6.30 × 15 =
  7. 7.43 × 15 =
  8. 8.26 × 15 =
  9. 9.44 × 15 =
  10. 10.11 × 15 =
  11. 11.62 × 15 =
  12. 12.27 × 15 =
  13. 13.9 × 15 =
  14. 14.24 × 15 =
  15. 15.51 × 15 =
  16. 16.33 × 15 =
  17. 17.27 × 15 =
  18. 18.26 × 15 =
  19. 19.8 × 15 =
  20. 20.52 × 15 =
  21. 21.39 × 15 =
  22. 22.20 × 15 =
  23. 23.4 × 15 =
  24. 24.38 × 15 =
  25. 25.35 × 15 =
  26. 26.27 × 15 =
  27. 27.16 × 15 =
  28. 28.40 × 15 =
  29. 29.28 × 15 =
  30. 30.12 × 15 =
  31. 31.38 × 15 =
  32. 32.31 × 15 =
  33. 33.22 × 15 =
  34. 34.41 × 15 =
  35. 35.14 × 15 =
  36. 36.41 × 15 =
  37. 37.17 × 15 =
  38. 38.57 × 15 =
  39. 39.31 × 15 =
  40. 40.4 × 15 =

Answer key

  1. 300
  2. 690
  3. 120
  4. 945
  5. 405
  6. 450
  7. 645
  8. 390
  9. 660
  10. 165
  11. 930
  12. 405
  13. 135
  14. 360
  15. 765
  16. 495
  17. 405
  18. 390
  19. 120
  20. 780
  21. 585
  22. 300
  23. 60
  24. 570
  25. 525
  26. 405
  27. 240
  28. 600
  29. 420
  30. 180
  31. 570
  32. 465
  33. 330
  34. 615
  35. 210
  36. 615
  37. 255
  38. 855
  39. 465
  40. 60

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