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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 8 · 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. 2.37 × 15 =
  3. 3.62 × 15 =
  4. 4.55 × 15 =
  5. 5.52 × 15 =
  6. 6.13 × 15 =
  7. 7.10 × 15 =
  8. 8.31 × 15 =
  9. 9.44 × 15 =
  10. 10.14 × 15 =
  11. 11.17 × 15 =
  12. 12.23 × 15 =
  13. 13.38 × 15 =
  14. 14.30 × 15 =
  15. 15.20 × 15 =
  16. 16.64 × 15 =
  17. 17.62 × 15 =
  18. 18.51 × 15 =
  19. 19.52 × 15 =
  20. 20.55 × 15 =
  21. 21.23 × 15 =
  22. 22.64 × 15 =
  23. 23.17 × 15 =
  24. 24.57 × 15 =
  25. 25.17 × 15 =
  26. 26.26 × 15 =
  27. 27.16 × 15 =
  28. 28.8 × 15 =
  29. 29.22 × 15 =
  30. 30.11 × 15 =
  31. 31.35 × 15 =
  32. 32.50 × 15 =
  33. 33.20 × 15 =
  34. 34.50 × 15 =
  35. 35.13 × 15 =
  36. 36.60 × 15 =
  37. 37.41 × 15 =
  38. 38.61 × 15 =
  39. 39.60 × 15 =
  40. 40.58 × 15 =

Answer key

  1. 90
  2. 555
  3. 930
  4. 825
  5. 780
  6. 195
  7. 150
  8. 465
  9. 660
  10. 210
  11. 255
  12. 345
  13. 570
  14. 450
  15. 300
  16. 960
  17. 930
  18. 765
  19. 780
  20. 825
  21. 345
  22. 960
  23. 255
  24. 855
  25. 255
  26. 390
  27. 240
  28. 120
  29. 330
  30. 165
  31. 525
  32. 750
  33. 300
  34. 750
  35. 195
  36. 900
  37. 615
  38. 915
  39. 900
  40. 870

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