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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 467 · 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. 1.49 × 15 =
  2. 2.56 × 15 =
  3. 3.57 × 15 =
  4. 4.8 × 15 =
  5. 5.47 × 15 =
  6. 6.58 × 15 =
  7. 7.4 × 15 =
  8. 8.20 × 15 =
  9. 9.40 × 15 =
  10. 10.63 × 15 =
  11. 11.61 × 15 =
  12. 12.47 × 15 =
  13. 13.20 × 15 =
  14. 14.57 × 15 =
  15. 15.54 × 15 =
  16. 16.11 × 15 =
  17. 17.5 × 15 =
  18. 18.7 × 15 =
  19. 19.17 × 15 =
  20. 20.16 × 15 =
  21. 21.31 × 15 =
  22. 22.54 × 15 =
  23. 23.32 × 15 =
  24. 24.61 × 15 =
  25. 25.4 × 15 =
  26. 26.18 × 15 =
  27. 27.14 × 15 =
  28. 28.54 × 15 =
  29. 29.50 × 15 =
  30. 30.20 × 15 =
  31. 31.14 × 15 =
  32. 32.33 × 15 =
  33. 33.58 × 15 =
  34. 34.56 × 15 =
  35. 35.46 × 15 =
  36. 36.27 × 15 =
  37. 37.48 × 15 =
  38. 38.38 × 15 =
  39. 39.59 × 15 =
  40. 40.62 × 15 =

Answer key

  1. 735
  2. 840
  3. 855
  4. 120
  5. 705
  6. 870
  7. 60
  8. 300
  9. 600
  10. 945
  11. 915
  12. 705
  13. 300
  14. 855
  15. 810
  16. 165
  17. 75
  18. 105
  19. 255
  20. 240
  21. 465
  22. 810
  23. 480
  24. 915
  25. 60
  26. 270
  27. 210
  28. 810
  29. 750
  30. 300
  31. 210
  32. 495
  33. 870
  34. 840
  35. 690
  36. 405
  37. 720
  38. 570
  39. 885
  40. 930

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