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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 738 · 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. 1.24 × 15 =
  2. 2.54 × 15 =
  3. 3.53 × 15 =
  4. 4.18 × 15 =
  5. 5.63 × 15 =
  6. 6.31 × 15 =
  7. 7.11 × 15 =
  8. 8.8 × 15 =
  9. 9.48 × 15 =
  10. 10.24 × 15 =
  11. 11.19 × 15 =
  12. 12.27 × 15 =
  13. 13.26 × 15 =
  14. 14.62 × 15 =
  15. 15.27 × 15 =
  16. 16.14 × 15 =
  17. 17.43 × 15 =
  18. 18.58 × 15 =
  19. 19.56 × 15 =
  20. 20.33 × 15 =
  21. 21.35 × 15 =
  22. 22.12 × 15 =
  23. 23.27 × 15 =
  24. 24.22 × 15 =
  25. 25.21 × 15 =
  26. 26.8 × 15 =
  27. 27.16 × 15 =
  28. 28.22 × 15 =
  29. 29.30 × 15 =
  30. 30.60 × 15 =
  31. 31.17 × 15 =
  32. 32.37 × 15 =
  33. 33.62 × 15 =
  34. 34.47 × 15 =
  35. 35.26 × 15 =
  36. 36.54 × 15 =
  37. 37.43 × 15 =
  38. 38.60 × 15 =
  39. 39.24 × 15 =
  40. 40.9 × 15 =

Answer key

  1. 360
  2. 810
  3. 795
  4. 270
  5. 945
  6. 465
  7. 165
  8. 120
  9. 720
  10. 360
  11. 285
  12. 405
  13. 390
  14. 930
  15. 405
  16. 210
  17. 645
  18. 870
  19. 840
  20. 495
  21. 525
  22. 180
  23. 405
  24. 330
  25. 315
  26. 120
  27. 240
  28. 330
  29. 450
  30. 900
  31. 255
  32. 555
  33. 930
  34. 705
  35. 390
  36. 810
  37. 645
  38. 900
  39. 360
  40. 135

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