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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 795 · 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. 1.38 × 15 =
  2. 2.31 × 15 =
  3. 3.7 × 15 =
  4. 4.39 × 15 =
  5. 5.14 × 15 =
  6. 6.26 × 15 =
  7. 7.60 × 15 =
  8. 8.11 × 15 =
  9. 9.38 × 15 =
  10. 10.8 × 15 =
  11. 11.14 × 15 =
  12. 12.28 × 15 =
  13. 13.44 × 15 =
  14. 14.46 × 15 =
  15. 15.26 × 15 =
  16. 16.50 × 15 =
  17. 17.25 × 15 =
  18. 18.58 × 15 =
  19. 19.13 × 15 =
  20. 20.17 × 15 =
  21. 21.9 × 15 =
  22. 22.53 × 15 =
  23. 23.27 × 15 =
  24. 24.40 × 15 =
  25. 25.30 × 15 =
  26. 26.58 × 15 =
  27. 27.6 × 15 =
  28. 28.54 × 15 =
  29. 29.12 × 15 =
  30. 30.32 × 15 =
  31. 31.43 × 15 =
  32. 32.38 × 15 =
  33. 33.12 × 15 =
  34. 34.26 × 15 =
  35. 35.12 × 15 =
  36. 36.9 × 15 =
  37. 37.62 × 15 =
  38. 38.23 × 15 =
  39. 39.49 × 15 =
  40. 40.13 × 15 =

Answer key

  1. 570
  2. 465
  3. 105
  4. 585
  5. 210
  6. 390
  7. 900
  8. 165
  9. 570
  10. 120
  11. 210
  12. 420
  13. 660
  14. 690
  15. 390
  16. 750
  17. 375
  18. 870
  19. 195
  20. 255
  21. 135
  22. 795
  23. 405
  24. 600
  25. 450
  26. 870
  27. 90
  28. 810
  29. 180
  30. 480
  31. 645
  32. 570
  33. 180
  34. 390
  35. 180
  36. 135
  37. 930
  38. 345
  39. 735
  40. 195

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