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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 239 · 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. 2.17 × 15 =
  3. 3.27 × 15 =
  4. 4.47 × 15 =
  5. 5.20 × 15 =
  6. 6.9 × 15 =
  7. 7.55 × 15 =
  8. 8.64 × 15 =
  9. 9.22 × 15 =
  10. 10.13 × 15 =
  11. 11.50 × 15 =
  12. 12.51 × 15 =
  13. 13.62 × 15 =
  14. 14.30 × 15 =
  15. 15.50 × 15 =
  16. 16.13 × 15 =
  17. 17.4 × 15 =
  18. 18.41 × 15 =
  19. 19.17 × 15 =
  20. 20.56 × 15 =
  21. 21.45 × 15 =
  22. 22.54 × 15 =
  23. 23.46 × 15 =
  24. 24.44 × 15 =
  25. 25.15 × 15 =
  26. 26.63 × 15 =
  27. 27.7 × 15 =
  28. 28.62 × 15 =
  29. 29.31 × 15 =
  30. 30.36 × 15 =
  31. 31.14 × 15 =
  32. 32.31 × 15 =
  33. 33.19 × 15 =
  34. 34.7 × 15 =
  35. 35.12 × 15 =
  36. 36.42 × 15 =
  37. 37.8 × 15 =
  38. 38.63 × 15 =
  39. 39.14 × 15 =
  40. 40.46 × 15 =

Answer key

  1. 690
  2. 255
  3. 405
  4. 705
  5. 300
  6. 135
  7. 825
  8. 960
  9. 330
  10. 195
  11. 750
  12. 765
  13. 930
  14. 450
  15. 750
  16. 195
  17. 60
  18. 615
  19. 255
  20. 840
  21. 675
  22. 810
  23. 690
  24. 660
  25. 225
  26. 945
  27. 105
  28. 930
  29. 465
  30. 540
  31. 210
  32. 465
  33. 285
  34. 105
  35. 180
  36. 630
  37. 120
  38. 945
  39. 210
  40. 690

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