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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 932 · 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. 1.32 × 15 =
  2. 2.10 × 15 =
  3. 3.30 × 15 =
  4. 4.21 × 15 =
  5. 5.52 × 15 =
  6. 6.46 × 15 =
  7. 7.6 × 15 =
  8. 8.37 × 15 =
  9. 9.63 × 15 =
  10. 10.54 × 15 =
  11. 11.5 × 15 =
  12. 12.16 × 15 =
  13. 13.36 × 15 =
  14. 14.4 × 15 =
  15. 15.25 × 15 =
  16. 16.64 × 15 =
  17. 17.63 × 15 =
  18. 18.11 × 15 =
  19. 19.31 × 15 =
  20. 20.45 × 15 =
  21. 21.57 × 15 =
  22. 22.51 × 15 =
  23. 23.49 × 15 =
  24. 24.42 × 15 =
  25. 25.45 × 15 =
  26. 26.19 × 15 =
  27. 27.11 × 15 =
  28. 28.24 × 15 =
  29. 29.9 × 15 =
  30. 30.61 × 15 =
  31. 31.60 × 15 =
  32. 32.55 × 15 =
  33. 33.10 × 15 =
  34. 34.36 × 15 =
  35. 35.7 × 15 =
  36. 36.52 × 15 =
  37. 37.20 × 15 =
  38. 38.16 × 15 =
  39. 39.17 × 15 =
  40. 40.50 × 15 =

Answer key

  1. 480
  2. 150
  3. 450
  4. 315
  5. 780
  6. 690
  7. 90
  8. 555
  9. 945
  10. 810
  11. 75
  12. 240
  13. 540
  14. 60
  15. 375
  16. 960
  17. 945
  18. 165
  19. 465
  20. 675
  21. 855
  22. 765
  23. 735
  24. 630
  25. 675
  26. 285
  27. 165
  28. 360
  29. 135
  30. 915
  31. 900
  32. 825
  33. 150
  34. 540
  35. 105
  36. 780
  37. 300
  38. 240
  39. 255
  40. 750

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