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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 466 · 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. 1.40 × 15 =
  2. 2.48 × 15 =
  3. 3.18 × 15 =
  4. 4.42 × 15 =
  5. 5.20 × 15 =
  6. 6.16 × 15 =
  7. 7.33 × 15 =
  8. 8.59 × 15 =
  9. 9.12 × 15 =
  10. 10.45 × 15 =
  11. 11.52 × 15 =
  12. 12.13 × 15 =
  13. 13.26 × 15 =
  14. 14.60 × 15 =
  15. 15.53 × 15 =
  16. 16.63 × 15 =
  17. 17.14 × 15 =
  18. 18.26 × 15 =
  19. 19.13 × 15 =
  20. 20.63 × 15 =
  21. 21.62 × 15 =
  22. 22.37 × 15 =
  23. 23.22 × 15 =
  24. 24.4 × 15 =
  25. 25.54 × 15 =
  26. 26.13 × 15 =
  27. 27.29 × 15 =
  28. 28.40 × 15 =
  29. 29.35 × 15 =
  30. 30.60 × 15 =
  31. 31.44 × 15 =
  32. 32.58 × 15 =
  33. 33.9 × 15 =
  34. 34.16 × 15 =
  35. 35.43 × 15 =
  36. 36.35 × 15 =
  37. 37.53 × 15 =
  38. 38.41 × 15 =
  39. 39.45 × 15 =
  40. 40.29 × 15 =

Answer key

  1. 600
  2. 720
  3. 270
  4. 630
  5. 300
  6. 240
  7. 495
  8. 885
  9. 180
  10. 675
  11. 780
  12. 195
  13. 390
  14. 900
  15. 795
  16. 945
  17. 210
  18. 390
  19. 195
  20. 945
  21. 930
  22. 555
  23. 330
  24. 60
  25. 810
  26. 195
  27. 435
  28. 600
  29. 525
  30. 900
  31. 660
  32. 870
  33. 135
  34. 240
  35. 645
  36. 525
  37. 795
  38. 615
  39. 675
  40. 435

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