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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 194 · 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. 1.64 × 15 =
  2. 2.58 × 15 =
  3. 3.10 × 15 =
  4. 4.43 × 15 =
  5. 5.50 × 15 =
  6. 6.62 × 15 =
  7. 7.62 × 15 =
  8. 8.56 × 15 =
  9. 9.11 × 15 =
  10. 10.9 × 15 =
  11. 11.42 × 15 =
  12. 12.58 × 15 =
  13. 13.43 × 15 =
  14. 14.49 × 15 =
  15. 15.46 × 15 =
  16. 16.17 × 15 =
  17. 17.28 × 15 =
  18. 18.53 × 15 =
  19. 19.31 × 15 =
  20. 20.61 × 15 =
  21. 21.45 × 15 =
  22. 22.7 × 15 =
  23. 23.17 × 15 =
  24. 24.10 × 15 =
  25. 25.52 × 15 =
  26. 26.27 × 15 =
  27. 27.17 × 15 =
  28. 28.8 × 15 =
  29. 29.43 × 15 =
  30. 30.20 × 15 =
  31. 31.16 × 15 =
  32. 32.31 × 15 =
  33. 33.36 × 15 =
  34. 34.23 × 15 =
  35. 35.10 × 15 =
  36. 36.37 × 15 =
  37. 37.61 × 15 =
  38. 38.46 × 15 =
  39. 39.50 × 15 =
  40. 40.50 × 15 =

Answer key

  1. 960
  2. 870
  3. 150
  4. 645
  5. 750
  6. 930
  7. 930
  8. 840
  9. 165
  10. 135
  11. 630
  12. 870
  13. 645
  14. 735
  15. 690
  16. 255
  17. 420
  18. 795
  19. 465
  20. 915
  21. 675
  22. 105
  23. 255
  24. 150
  25. 780
  26. 405
  27. 255
  28. 120
  29. 645
  30. 300
  31. 240
  32. 465
  33. 540
  34. 345
  35. 150
  36. 555
  37. 915
  38. 690
  39. 750
  40. 750

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