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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 207 · 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. 1.6 × 15 =
  2. 2.20 × 15 =
  3. 3.55 × 15 =
  4. 4.5 × 15 =
  5. 5.47 × 15 =
  6. 6.5 × 15 =
  7. 7.19 × 15 =
  8. 8.23 × 15 =
  9. 9.9 × 15 =
  10. 10.51 × 15 =
  11. 11.7 × 15 =
  12. 12.24 × 15 =
  13. 13.22 × 15 =
  14. 14.7 × 15 =
  15. 15.10 × 15 =
  16. 16.10 × 15 =
  17. 17.39 × 15 =
  18. 18.58 × 15 =
  19. 19.13 × 15 =
  20. 20.55 × 15 =
  21. 21.36 × 15 =
  22. 22.36 × 15 =
  23. 23.9 × 15 =
  24. 24.8 × 15 =
  25. 25.48 × 15 =
  26. 26.18 × 15 =
  27. 27.29 × 15 =
  28. 28.49 × 15 =
  29. 29.63 × 15 =
  30. 30.14 × 15 =
  31. 31.38 × 15 =
  32. 32.61 × 15 =
  33. 33.60 × 15 =
  34. 34.26 × 15 =
  35. 35.12 × 15 =
  36. 36.38 × 15 =
  37. 37.14 × 15 =
  38. 38.49 × 15 =
  39. 39.19 × 15 =
  40. 40.19 × 15 =

Answer key

  1. 90
  2. 300
  3. 825
  4. 75
  5. 705
  6. 75
  7. 285
  8. 345
  9. 135
  10. 765
  11. 105
  12. 360
  13. 330
  14. 105
  15. 150
  16. 150
  17. 585
  18. 870
  19. 195
  20. 825
  21. 540
  22. 540
  23. 135
  24. 120
  25. 720
  26. 270
  27. 435
  28. 735
  29. 945
  30. 210
  31. 570
  32. 915
  33. 900
  34. 390
  35. 180
  36. 570
  37. 210
  38. 735
  39. 285
  40. 285

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