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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 942 · 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. 1.16 × 15 =
  2. 2.32 × 15 =
  3. 3.5 × 15 =
  4. 4.64 × 15 =
  5. 5.49 × 15 =
  6. 6.41 × 15 =
  7. 7.24 × 15 =
  8. 8.18 × 15 =
  9. 9.17 × 15 =
  10. 10.48 × 15 =
  11. 11.44 × 15 =
  12. 12.52 × 15 =
  13. 13.63 × 15 =
  14. 14.27 × 15 =
  15. 15.64 × 15 =
  16. 16.20 × 15 =
  17. 17.23 × 15 =
  18. 18.39 × 15 =
  19. 19.11 × 15 =
  20. 20.43 × 15 =
  21. 21.40 × 15 =
  22. 22.8 × 15 =
  23. 23.19 × 15 =
  24. 24.46 × 15 =
  25. 25.33 × 15 =
  26. 26.4 × 15 =
  27. 27.47 × 15 =
  28. 28.43 × 15 =
  29. 29.60 × 15 =
  30. 30.26 × 15 =
  31. 31.12 × 15 =
  32. 32.22 × 15 =
  33. 33.22 × 15 =
  34. 34.8 × 15 =
  35. 35.20 × 15 =
  36. 36.36 × 15 =
  37. 37.55 × 15 =
  38. 38.63 × 15 =
  39. 39.21 × 15 =
  40. 40.49 × 15 =

Answer key

  1. 240
  2. 480
  3. 75
  4. 960
  5. 735
  6. 615
  7. 360
  8. 270
  9. 255
  10. 720
  11. 660
  12. 780
  13. 945
  14. 405
  15. 960
  16. 300
  17. 345
  18. 585
  19. 165
  20. 645
  21. 600
  22. 120
  23. 285
  24. 690
  25. 495
  26. 60
  27. 705
  28. 645
  29. 900
  30. 390
  31. 180
  32. 330
  33. 330
  34. 120
  35. 300
  36. 540
  37. 825
  38. 945
  39. 315
  40. 735

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