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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 97 · 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. 1.46 × 15 =
  2. 2.13 × 15 =
  3. 3.56 × 15 =
  4. 4.45 × 15 =
  5. 5.19 × 15 =
  6. 6.10 × 15 =
  7. 7.9 × 15 =
  8. 8.19 × 15 =
  9. 9.10 × 15 =
  10. 10.62 × 15 =
  11. 11.5 × 15 =
  12. 12.63 × 15 =
  13. 13.10 × 15 =
  14. 14.42 × 15 =
  15. 15.28 × 15 =
  16. 16.62 × 15 =
  17. 17.50 × 15 =
  18. 18.64 × 15 =
  19. 19.20 × 15 =
  20. 20.16 × 15 =
  21. 21.29 × 15 =
  22. 22.42 × 15 =
  23. 23.58 × 15 =
  24. 24.39 × 15 =
  25. 25.19 × 15 =
  26. 26.29 × 15 =
  27. 27.15 × 15 =
  28. 28.42 × 15 =
  29. 29.40 × 15 =
  30. 30.11 × 15 =
  31. 31.56 × 15 =
  32. 32.61 × 15 =
  33. 33.63 × 15 =
  34. 34.15 × 15 =
  35. 35.18 × 15 =
  36. 36.34 × 15 =
  37. 37.6 × 15 =
  38. 38.7 × 15 =
  39. 39.7 × 15 =
  40. 40.11 × 15 =

Answer key

  1. 690
  2. 195
  3. 840
  4. 675
  5. 285
  6. 150
  7. 135
  8. 285
  9. 150
  10. 930
  11. 75
  12. 945
  13. 150
  14. 630
  15. 420
  16. 930
  17. 750
  18. 960
  19. 300
  20. 240
  21. 435
  22. 630
  23. 870
  24. 585
  25. 285
  26. 435
  27. 225
  28. 630
  29. 600
  30. 165
  31. 840
  32. 915
  33. 945
  34. 225
  35. 270
  36. 510
  37. 90
  38. 105
  39. 105
  40. 165

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