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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 115 · 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. 1.35 × 15 =
  2. 2.58 × 15 =
  3. 3.57 × 15 =
  4. 4.35 × 15 =
  5. 5.53 × 15 =
  6. 6.63 × 15 =
  7. 7.38 × 15 =
  8. 8.43 × 15 =
  9. 9.46 × 15 =
  10. 10.55 × 15 =
  11. 11.37 × 15 =
  12. 12.63 × 15 =
  13. 13.25 × 15 =
  14. 14.59 × 15 =
  15. 15.34 × 15 =
  16. 16.54 × 15 =
  17. 17.10 × 15 =
  18. 18.48 × 15 =
  19. 19.55 × 15 =
  20. 20.16 × 15 =
  21. 21.13 × 15 =
  22. 22.11 × 15 =
  23. 23.30 × 15 =
  24. 24.32 × 15 =
  25. 25.28 × 15 =
  26. 26.9 × 15 =
  27. 27.42 × 15 =
  28. 28.44 × 15 =
  29. 29.42 × 15 =
  30. 30.44 × 15 =
  31. 31.30 × 15 =
  32. 32.30 × 15 =
  33. 33.14 × 15 =
  34. 34.41 × 15 =
  35. 35.6 × 15 =
  36. 36.23 × 15 =
  37. 37.14 × 15 =
  38. 38.5 × 15 =
  39. 39.14 × 15 =
  40. 40.22 × 15 =

Answer key

  1. 525
  2. 870
  3. 855
  4. 525
  5. 795
  6. 945
  7. 570
  8. 645
  9. 690
  10. 825
  11. 555
  12. 945
  13. 375
  14. 885
  15. 510
  16. 810
  17. 150
  18. 720
  19. 825
  20. 240
  21. 195
  22. 165
  23. 450
  24. 480
  25. 420
  26. 135
  27. 630
  28. 660
  29. 630
  30. 660
  31. 450
  32. 450
  33. 210
  34. 615
  35. 90
  36. 345
  37. 210
  38. 75
  39. 210
  40. 330

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