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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 704 · 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. 1.20 × 15 =
  2. 2.9 × 15 =
  3. 3.21 × 15 =
  4. 4.26 × 15 =
  5. 5.35 × 15 =
  6. 6.22 × 15 =
  7. 7.48 × 15 =
  8. 8.5 × 15 =
  9. 9.6 × 15 =
  10. 10.45 × 15 =
  11. 11.45 × 15 =
  12. 12.44 × 15 =
  13. 13.60 × 15 =
  14. 14.7 × 15 =
  15. 15.35 × 15 =
  16. 16.26 × 15 =
  17. 17.31 × 15 =
  18. 18.48 × 15 =
  19. 19.39 × 15 =
  20. 20.43 × 15 =
  21. 21.46 × 15 =
  22. 22.52 × 15 =
  23. 23.61 × 15 =
  24. 24.4 × 15 =
  25. 25.28 × 15 =
  26. 26.7 × 15 =
  27. 27.52 × 15 =
  28. 28.59 × 15 =
  29. 29.61 × 15 =
  30. 30.11 × 15 =
  31. 31.11 × 15 =
  32. 32.8 × 15 =
  33. 33.11 × 15 =
  34. 34.63 × 15 =
  35. 35.28 × 15 =
  36. 36.57 × 15 =
  37. 37.11 × 15 =
  38. 38.53 × 15 =
  39. 39.62 × 15 =
  40. 40.29 × 15 =

Answer key

  1. 300
  2. 135
  3. 315
  4. 390
  5. 525
  6. 330
  7. 720
  8. 75
  9. 90
  10. 675
  11. 675
  12. 660
  13. 900
  14. 105
  15. 525
  16. 390
  17. 465
  18. 720
  19. 585
  20. 645
  21. 690
  22. 780
  23. 915
  24. 60
  25. 420
  26. 105
  27. 780
  28. 885
  29. 915
  30. 165
  31. 165
  32. 120
  33. 165
  34. 945
  35. 420
  36. 855
  37. 165
  38. 795
  39. 930
  40. 435

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