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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 899 · 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. 1.52 × 15 =
  2. 2.14 × 15 =
  3. 3.42 × 15 =
  4. 4.4 × 15 =
  5. 5.59 × 15 =
  6. 6.44 × 15 =
  7. 7.54 × 15 =
  8. 8.41 × 15 =
  9. 9.6 × 15 =
  10. 10.4 × 15 =
  11. 11.42 × 15 =
  12. 12.11 × 15 =
  13. 13.11 × 15 =
  14. 14.16 × 15 =
  15. 15.4 × 15 =
  16. 16.42 × 15 =
  17. 17.46 × 15 =
  18. 18.26 × 15 =
  19. 19.13 × 15 =
  20. 20.36 × 15 =
  21. 21.33 × 15 =
  22. 22.18 × 15 =
  23. 23.42 × 15 =
  24. 24.57 × 15 =
  25. 25.6 × 15 =
  26. 26.7 × 15 =
  27. 27.53 × 15 =
  28. 28.20 × 15 =
  29. 29.26 × 15 =
  30. 30.47 × 15 =
  31. 31.39 × 15 =
  32. 32.57 × 15 =
  33. 33.7 × 15 =
  34. 34.29 × 15 =
  35. 35.31 × 15 =
  36. 36.45 × 15 =
  37. 37.31 × 15 =
  38. 38.4 × 15 =
  39. 39.15 × 15 =
  40. 40.22 × 15 =

Answer key

  1. 780
  2. 210
  3. 630
  4. 60
  5. 885
  6. 660
  7. 810
  8. 615
  9. 90
  10. 60
  11. 630
  12. 165
  13. 165
  14. 240
  15. 60
  16. 630
  17. 690
  18. 390
  19. 195
  20. 540
  21. 495
  22. 270
  23. 630
  24. 855
  25. 90
  26. 105
  27. 795
  28. 300
  29. 390
  30. 705
  31. 585
  32. 855
  33. 105
  34. 435
  35. 465
  36. 675
  37. 465
  38. 60
  39. 225
  40. 330

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