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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 688 · 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. 1.10 × 15 =
  2. 2.62 × 15 =
  3. 3.43 × 15 =
  4. 4.17 × 15 =
  5. 5.28 × 15 =
  6. 6.20 × 15 =
  7. 7.47 × 15 =
  8. 8.50 × 15 =
  9. 9.36 × 15 =
  10. 10.21 × 15 =
  11. 11.63 × 15 =
  12. 12.20 × 15 =
  13. 13.10 × 15 =
  14. 14.53 × 15 =
  15. 15.10 × 15 =
  16. 16.30 × 15 =
  17. 17.37 × 15 =
  18. 18.58 × 15 =
  19. 19.36 × 15 =
  20. 20.16 × 15 =
  21. 21.12 × 15 =
  22. 22.20 × 15 =
  23. 23.14 × 15 =
  24. 24.24 × 15 =
  25. 25.54 × 15 =
  26. 26.28 × 15 =
  27. 27.11 × 15 =
  28. 28.58 × 15 =
  29. 29.21 × 15 =
  30. 30.22 × 15 =
  31. 31.19 × 15 =
  32. 32.13 × 15 =
  33. 33.20 × 15 =
  34. 34.29 × 15 =
  35. 35.7 × 15 =
  36. 36.44 × 15 =
  37. 37.58 × 15 =
  38. 38.63 × 15 =
  39. 39.12 × 15 =
  40. 40.16 × 15 =

Answer key

  1. 150
  2. 930
  3. 645
  4. 255
  5. 420
  6. 300
  7. 705
  8. 750
  9. 540
  10. 315
  11. 945
  12. 300
  13. 150
  14. 795
  15. 150
  16. 450
  17. 555
  18. 870
  19. 540
  20. 240
  21. 180
  22. 300
  23. 210
  24. 360
  25. 810
  26. 420
  27. 165
  28. 870
  29. 315
  30. 330
  31. 285
  32. 195
  33. 300
  34. 435
  35. 105
  36. 660
  37. 870
  38. 945
  39. 180
  40. 240

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