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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 967 · 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. 1.18 × 15 =
  2. 2.40 × 15 =
  3. 3.63 × 15 =
  4. 4.17 × 15 =
  5. 5.40 × 15 =
  6. 6.45 × 15 =
  7. 7.62 × 15 =
  8. 8.49 × 15 =
  9. 9.4 × 15 =
  10. 10.23 × 15 =
  11. 11.10 × 15 =
  12. 12.18 × 15 =
  13. 13.47 × 15 =
  14. 14.48 × 15 =
  15. 15.61 × 15 =
  16. 16.39 × 15 =
  17. 17.14 × 15 =
  18. 18.17 × 15 =
  19. 19.4 × 15 =
  20. 20.31 × 15 =
  21. 21.43 × 15 =
  22. 22.12 × 15 =
  23. 23.13 × 15 =
  24. 24.19 × 15 =
  25. 25.7 × 15 =
  26. 26.62 × 15 =
  27. 27.4 × 15 =
  28. 28.5 × 15 =
  29. 29.49 × 15 =
  30. 30.28 × 15 =
  31. 31.28 × 15 =
  32. 32.61 × 15 =
  33. 33.18 × 15 =
  34. 34.57 × 15 =
  35. 35.28 × 15 =
  36. 36.19 × 15 =
  37. 37.55 × 15 =
  38. 38.39 × 15 =
  39. 39.7 × 15 =
  40. 40.51 × 15 =

Answer key

  1. 270
  2. 600
  3. 945
  4. 255
  5. 600
  6. 675
  7. 930
  8. 735
  9. 60
  10. 345
  11. 150
  12. 270
  13. 705
  14. 720
  15. 915
  16. 585
  17. 210
  18. 255
  19. 60
  20. 465
  21. 645
  22. 180
  23. 195
  24. 285
  25. 105
  26. 930
  27. 60
  28. 75
  29. 735
  30. 420
  31. 420
  32. 915
  33. 270
  34. 855
  35. 420
  36. 285
  37. 825
  38. 585
  39. 105
  40. 765

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