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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 906 · 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. 1.36 × 15 =
  2. 2.45 × 15 =
  3. 3.31 × 15 =
  4. 4.59 × 15 =
  5. 5.58 × 15 =
  6. 6.44 × 15 =
  7. 7.56 × 15 =
  8. 8.23 × 15 =
  9. 9.13 × 15 =
  10. 10.41 × 15 =
  11. 11.19 × 15 =
  12. 12.21 × 15 =
  13. 13.47 × 15 =
  14. 14.34 × 15 =
  15. 15.22 × 15 =
  16. 16.5 × 15 =
  17. 17.44 × 15 =
  18. 18.14 × 15 =
  19. 19.47 × 15 =
  20. 20.9 × 15 =
  21. 21.52 × 15 =
  22. 22.50 × 15 =
  23. 23.15 × 15 =
  24. 24.53 × 15 =
  25. 25.37 × 15 =
  26. 26.25 × 15 =
  27. 27.54 × 15 =
  28. 28.44 × 15 =
  29. 29.23 × 15 =
  30. 30.6 × 15 =
  31. 31.26 × 15 =
  32. 32.51 × 15 =
  33. 33.15 × 15 =
  34. 34.36 × 15 =
  35. 35.54 × 15 =
  36. 36.47 × 15 =
  37. 37.37 × 15 =
  38. 38.9 × 15 =
  39. 39.54 × 15 =
  40. 40.25 × 15 =

Answer key

  1. 540
  2. 675
  3. 465
  4. 885
  5. 870
  6. 660
  7. 840
  8. 345
  9. 195
  10. 615
  11. 285
  12. 315
  13. 705
  14. 510
  15. 330
  16. 75
  17. 660
  18. 210
  19. 705
  20. 135
  21. 780
  22. 750
  23. 225
  24. 795
  25. 555
  26. 375
  27. 810
  28. 660
  29. 345
  30. 90
  31. 390
  32. 765
  33. 225
  34. 540
  35. 810
  36. 705
  37. 555
  38. 135
  39. 810
  40. 375

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