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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 693 · 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. 1.5 × 15 =
  2. 2.7 × 15 =
  3. 3.63 × 15 =
  4. 4.31 × 15 =
  5. 5.44 × 15 =
  6. 6.7 × 15 =
  7. 7.9 × 15 =
  8. 8.26 × 15 =
  9. 9.45 × 15 =
  10. 10.8 × 15 =
  11. 11.64 × 15 =
  12. 12.4 × 15 =
  13. 13.16 × 15 =
  14. 14.44 × 15 =
  15. 15.23 × 15 =
  16. 16.46 × 15 =
  17. 17.31 × 15 =
  18. 18.4 × 15 =
  19. 19.56 × 15 =
  20. 20.22 × 15 =
  21. 21.36 × 15 =
  22. 22.17 × 15 =
  23. 23.62 × 15 =
  24. 24.57 × 15 =
  25. 25.51 × 15 =
  26. 26.54 × 15 =
  27. 27.23 × 15 =
  28. 28.20 × 15 =
  29. 29.27 × 15 =
  30. 30.38 × 15 =
  31. 31.23 × 15 =
  32. 32.28 × 15 =
  33. 33.5 × 15 =
  34. 34.58 × 15 =
  35. 35.60 × 15 =
  36. 36.24 × 15 =
  37. 37.51 × 15 =
  38. 38.31 × 15 =
  39. 39.25 × 15 =
  40. 40.23 × 15 =

Answer key

  1. 75
  2. 105
  3. 945
  4. 465
  5. 660
  6. 105
  7. 135
  8. 390
  9. 675
  10. 120
  11. 960
  12. 60
  13. 240
  14. 660
  15. 345
  16. 690
  17. 465
  18. 60
  19. 840
  20. 330
  21. 540
  22. 255
  23. 930
  24. 855
  25. 765
  26. 810
  27. 345
  28. 300
  29. 405
  30. 570
  31. 345
  32. 420
  33. 75
  34. 870
  35. 900
  36. 360
  37. 765
  38. 465
  39. 375
  40. 345

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