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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 966 · 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. 1.9 × 15 =
  2. 2.53 × 15 =
  3. 3.56 × 15 =
  4. 4.9 × 15 =
  5. 5.53 × 15 =
  6. 6.11 × 15 =
  7. 7.19 × 15 =
  8. 8.18 × 15 =
  9. 9.23 × 15 =
  10. 10.19 × 15 =
  11. 11.33 × 15 =
  12. 12.22 × 15 =
  13. 13.39 × 15 =
  14. 14.63 × 15 =
  15. 15.15 × 15 =
  16. 16.5 × 15 =
  17. 17.55 × 15 =
  18. 18.15 × 15 =
  19. 19.49 × 15 =
  20. 20.9 × 15 =
  21. 21.61 × 15 =
  22. 22.58 × 15 =
  23. 23.58 × 15 =
  24. 24.47 × 15 =
  25. 25.10 × 15 =
  26. 26.15 × 15 =
  27. 27.44 × 15 =
  28. 28.32 × 15 =
  29. 29.44 × 15 =
  30. 30.25 × 15 =
  31. 31.64 × 15 =
  32. 32.6 × 15 =
  33. 33.34 × 15 =
  34. 34.49 × 15 =
  35. 35.20 × 15 =
  36. 36.44 × 15 =
  37. 37.47 × 15 =
  38. 38.61 × 15 =
  39. 39.4 × 15 =
  40. 40.21 × 15 =

Answer key

  1. 135
  2. 795
  3. 840
  4. 135
  5. 795
  6. 165
  7. 285
  8. 270
  9. 345
  10. 285
  11. 495
  12. 330
  13. 585
  14. 945
  15. 225
  16. 75
  17. 825
  18. 225
  19. 735
  20. 135
  21. 915
  22. 870
  23. 870
  24. 705
  25. 150
  26. 225
  27. 660
  28. 480
  29. 660
  30. 375
  31. 960
  32. 90
  33. 510
  34. 735
  35. 300
  36. 660
  37. 705
  38. 915
  39. 60
  40. 315

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