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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 192 · 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. 1.63 × 15 =
  2. 2.58 × 15 =
  3. 3.33 × 15 =
  4. 4.33 × 15 =
  5. 5.36 × 15 =
  6. 6.7 × 15 =
  7. 7.25 × 15 =
  8. 8.32 × 15 =
  9. 9.52 × 15 =
  10. 10.35 × 15 =
  11. 11.29 × 15 =
  12. 12.11 × 15 =
  13. 13.34 × 15 =
  14. 14.41 × 15 =
  15. 15.23 × 15 =
  16. 16.64 × 15 =
  17. 17.6 × 15 =
  18. 18.40 × 15 =
  19. 19.52 × 15 =
  20. 20.6 × 15 =
  21. 21.63 × 15 =
  22. 22.30 × 15 =
  23. 23.43 × 15 =
  24. 24.26 × 15 =
  25. 25.44 × 15 =
  26. 26.13 × 15 =
  27. 27.31 × 15 =
  28. 28.24 × 15 =
  29. 29.61 × 15 =
  30. 30.61 × 15 =
  31. 31.32 × 15 =
  32. 32.63 × 15 =
  33. 33.17 × 15 =
  34. 34.19 × 15 =
  35. 35.12 × 15 =
  36. 36.49 × 15 =
  37. 37.20 × 15 =
  38. 38.60 × 15 =
  39. 39.50 × 15 =
  40. 40.17 × 15 =

Answer key

  1. 945
  2. 870
  3. 495
  4. 495
  5. 540
  6. 105
  7. 375
  8. 480
  9. 780
  10. 525
  11. 435
  12. 165
  13. 510
  14. 615
  15. 345
  16. 960
  17. 90
  18. 600
  19. 780
  20. 90
  21. 945
  22. 450
  23. 645
  24. 390
  25. 660
  26. 195
  27. 465
  28. 360
  29. 915
  30. 915
  31. 480
  32. 945
  33. 255
  34. 285
  35. 180
  36. 735
  37. 300
  38. 900
  39. 750
  40. 255

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