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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 292 · 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. 1.34 × 15 =
  2. 2.51 × 15 =
  3. 3.45 × 15 =
  4. 4.19 × 15 =
  5. 5.19 × 15 =
  6. 6.19 × 15 =
  7. 7.11 × 15 =
  8. 8.29 × 15 =
  9. 9.34 × 15 =
  10. 10.46 × 15 =
  11. 11.26 × 15 =
  12. 12.26 × 15 =
  13. 13.14 × 15 =
  14. 14.46 × 15 =
  15. 15.54 × 15 =
  16. 16.16 × 15 =
  17. 17.52 × 15 =
  18. 18.37 × 15 =
  19. 19.19 × 15 =
  20. 20.53 × 15 =
  21. 21.9 × 15 =
  22. 22.46 × 15 =
  23. 23.39 × 15 =
  24. 24.61 × 15 =
  25. 25.39 × 15 =
  26. 26.13 × 15 =
  27. 27.16 × 15 =
  28. 28.9 × 15 =
  29. 29.50 × 15 =
  30. 30.31 × 15 =
  31. 31.50 × 15 =
  32. 32.15 × 15 =
  33. 33.9 × 15 =
  34. 34.62 × 15 =
  35. 35.47 × 15 =
  36. 36.46 × 15 =
  37. 37.48 × 15 =
  38. 38.19 × 15 =
  39. 39.28 × 15 =
  40. 40.45 × 15 =

Answer key

  1. 510
  2. 765
  3. 675
  4. 285
  5. 285
  6. 285
  7. 165
  8. 435
  9. 510
  10. 690
  11. 390
  12. 390
  13. 210
  14. 690
  15. 810
  16. 240
  17. 780
  18. 555
  19. 285
  20. 795
  21. 135
  22. 690
  23. 585
  24. 915
  25. 585
  26. 195
  27. 240
  28. 135
  29. 750
  30. 465
  31. 750
  32. 225
  33. 135
  34. 930
  35. 705
  36. 690
  37. 720
  38. 285
  39. 420
  40. 675

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