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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 177 · 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. 1.53 × 15 =
  2. 2.6 × 15 =
  3. 3.43 × 15 =
  4. 4.19 × 15 =
  5. 5.32 × 15 =
  6. 6.26 × 15 =
  7. 7.40 × 15 =
  8. 8.19 × 15 =
  9. 9.16 × 15 =
  10. 10.54 × 15 =
  11. 11.36 × 15 =
  12. 12.21 × 15 =
  13. 13.7 × 15 =
  14. 14.62 × 15 =
  15. 15.17 × 15 =
  16. 16.9 × 15 =
  17. 17.19 × 15 =
  18. 18.29 × 15 =
  19. 19.7 × 15 =
  20. 20.29 × 15 =
  21. 21.6 × 15 =
  22. 22.53 × 15 =
  23. 23.45 × 15 =
  24. 24.8 × 15 =
  25. 25.32 × 15 =
  26. 26.10 × 15 =
  27. 27.25 × 15 =
  28. 28.17 × 15 =
  29. 29.54 × 15 =
  30. 30.8 × 15 =
  31. 31.22 × 15 =
  32. 32.4 × 15 =
  33. 33.46 × 15 =
  34. 34.36 × 15 =
  35. 35.33 × 15 =
  36. 36.21 × 15 =
  37. 37.20 × 15 =
  38. 38.42 × 15 =
  39. 39.54 × 15 =
  40. 40.46 × 15 =

Answer key

  1. 795
  2. 90
  3. 645
  4. 285
  5. 480
  6. 390
  7. 600
  8. 285
  9. 240
  10. 810
  11. 540
  12. 315
  13. 105
  14. 930
  15. 255
  16. 135
  17. 285
  18. 435
  19. 105
  20. 435
  21. 90
  22. 795
  23. 675
  24. 120
  25. 480
  26. 150
  27. 375
  28. 255
  29. 810
  30. 120
  31. 330
  32. 60
  33. 690
  34. 540
  35. 495
  36. 315
  37. 300
  38. 630
  39. 810
  40. 690

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