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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 916 · 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. 1.31 × 15 =
  2. 2.13 × 15 =
  3. 3.19 × 15 =
  4. 4.16 × 15 =
  5. 5.13 × 15 =
  6. 6.11 × 15 =
  7. 7.16 × 15 =
  8. 8.45 × 15 =
  9. 9.4 × 15 =
  10. 10.38 × 15 =
  11. 11.54 × 15 =
  12. 12.36 × 15 =
  13. 13.54 × 15 =
  14. 14.55 × 15 =
  15. 15.9 × 15 =
  16. 16.30 × 15 =
  17. 17.5 × 15 =
  18. 18.15 × 15 =
  19. 19.16 × 15 =
  20. 20.30 × 15 =
  21. 21.18 × 15 =
  22. 22.5 × 15 =
  23. 23.21 × 15 =
  24. 24.55 × 15 =
  25. 25.10 × 15 =
  26. 26.24 × 15 =
  27. 27.32 × 15 =
  28. 28.11 × 15 =
  29. 29.50 × 15 =
  30. 30.17 × 15 =
  31. 31.18 × 15 =
  32. 32.23 × 15 =
  33. 33.17 × 15 =
  34. 34.30 × 15 =
  35. 35.27 × 15 =
  36. 36.59 × 15 =
  37. 37.27 × 15 =
  38. 38.4 × 15 =
  39. 39.64 × 15 =
  40. 40.17 × 15 =

Answer key

  1. 465
  2. 195
  3. 285
  4. 240
  5. 195
  6. 165
  7. 240
  8. 675
  9. 60
  10. 570
  11. 810
  12. 540
  13. 810
  14. 825
  15. 135
  16. 450
  17. 75
  18. 225
  19. 240
  20. 450
  21. 270
  22. 75
  23. 315
  24. 825
  25. 150
  26. 360
  27. 480
  28. 165
  29. 750
  30. 255
  31. 270
  32. 345
  33. 255
  34. 450
  35. 405
  36. 885
  37. 405
  38. 60
  39. 960
  40. 255

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