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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 883 · 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. 2.14 × 15 =
  3. 3.38 × 15 =
  4. 4.9 × 15 =
  5. 5.37 × 15 =
  6. 6.54 × 15 =
  7. 7.43 × 15 =
  8. 8.35 × 15 =
  9. 9.30 × 15 =
  10. 10.6 × 15 =
  11. 11.13 × 15 =
  12. 12.33 × 15 =
  13. 13.5 × 15 =
  14. 14.35 × 15 =
  15. 15.36 × 15 =
  16. 16.26 × 15 =
  17. 17.63 × 15 =
  18. 18.14 × 15 =
  19. 19.25 × 15 =
  20. 20.35 × 15 =
  21. 21.63 × 15 =
  22. 22.54 × 15 =
  23. 23.37 × 15 =
  24. 24.39 × 15 =
  25. 25.34 × 15 =
  26. 26.11 × 15 =
  27. 27.48 × 15 =
  28. 28.23 × 15 =
  29. 29.33 × 15 =
  30. 30.54 × 15 =
  31. 31.9 × 15 =
  32. 32.9 × 15 =
  33. 33.58 × 15 =
  34. 34.11 × 15 =
  35. 35.39 × 15 =
  36. 36.10 × 15 =
  37. 37.31 × 15 =
  38. 38.37 × 15 =
  39. 39.5 × 15 =
  40. 40.20 × 15 =

Answer key

  1. 690
  2. 210
  3. 570
  4. 135
  5. 555
  6. 810
  7. 645
  8. 525
  9. 450
  10. 90
  11. 195
  12. 495
  13. 75
  14. 525
  15. 540
  16. 390
  17. 945
  18. 210
  19. 375
  20. 525
  21. 945
  22. 810
  23. 555
  24. 585
  25. 510
  26. 165
  27. 720
  28. 345
  29. 495
  30. 810
  31. 135
  32. 135
  33. 870
  34. 165
  35. 585
  36. 150
  37. 465
  38. 555
  39. 75
  40. 300

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