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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 441 · 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. 2.26 × 15 =
  3. 3.24 × 15 =
  4. 4.17 × 15 =
  5. 5.12 × 15 =
  6. 6.53 × 15 =
  7. 7.40 × 15 =
  8. 8.36 × 15 =
  9. 9.30 × 15 =
  10. 10.8 × 15 =
  11. 11.57 × 15 =
  12. 12.41 × 15 =
  13. 13.19 × 15 =
  14. 14.5 × 15 =
  15. 15.13 × 15 =
  16. 16.16 × 15 =
  17. 17.29 × 15 =
  18. 18.38 × 15 =
  19. 19.11 × 15 =
  20. 20.31 × 15 =
  21. 21.48 × 15 =
  22. 22.32 × 15 =
  23. 23.54 × 15 =
  24. 24.29 × 15 =
  25. 25.37 × 15 =
  26. 26.21 × 15 =
  27. 27.44 × 15 =
  28. 28.20 × 15 =
  29. 29.55 × 15 =
  30. 30.41 × 15 =
  31. 31.5 × 15 =
  32. 32.28 × 15 =
  33. 33.18 × 15 =
  34. 34.7 × 15 =
  35. 35.23 × 15 =
  36. 36.63 × 15 =
  37. 37.53 × 15 =
  38. 38.35 × 15 =
  39. 39.44 × 15 =
  40. 40.6 × 15 =

Answer key

  1. 540
  2. 390
  3. 360
  4. 255
  5. 180
  6. 795
  7. 600
  8. 540
  9. 450
  10. 120
  11. 855
  12. 615
  13. 285
  14. 75
  15. 195
  16. 240
  17. 435
  18. 570
  19. 165
  20. 465
  21. 720
  22. 480
  23. 810
  24. 435
  25. 555
  26. 315
  27. 660
  28. 300
  29. 825
  30. 615
  31. 75
  32. 420
  33. 270
  34. 105
  35. 345
  36. 945
  37. 795
  38. 525
  39. 660
  40. 90

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