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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 881 · 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. 1.13 × 15 =
  2. 2.53 × 15 =
  3. 3.19 × 15 =
  4. 4.18 × 15 =
  5. 5.58 × 15 =
  6. 6.6 × 15 =
  7. 7.6 × 15 =
  8. 8.22 × 15 =
  9. 9.47 × 15 =
  10. 10.24 × 15 =
  11. 11.46 × 15 =
  12. 12.35 × 15 =
  13. 13.17 × 15 =
  14. 14.26 × 15 =
  15. 15.55 × 15 =
  16. 16.6 × 15 =
  17. 17.34 × 15 =
  18. 18.14 × 15 =
  19. 19.19 × 15 =
  20. 20.20 × 15 =
  21. 21.40 × 15 =
  22. 22.7 × 15 =
  23. 23.11 × 15 =
  24. 24.24 × 15 =
  25. 25.20 × 15 =
  26. 26.53 × 15 =
  27. 27.46 × 15 =
  28. 28.5 × 15 =
  29. 29.41 × 15 =
  30. 30.13 × 15 =
  31. 31.58 × 15 =
  32. 32.32 × 15 =
  33. 33.63 × 15 =
  34. 34.6 × 15 =
  35. 35.57 × 15 =
  36. 36.19 × 15 =
  37. 37.20 × 15 =
  38. 38.25 × 15 =
  39. 39.49 × 15 =
  40. 40.4 × 15 =

Answer key

  1. 195
  2. 795
  3. 285
  4. 270
  5. 870
  6. 90
  7. 90
  8. 330
  9. 705
  10. 360
  11. 690
  12. 525
  13. 255
  14. 390
  15. 825
  16. 90
  17. 510
  18. 210
  19. 285
  20. 300
  21. 600
  22. 105
  23. 165
  24. 360
  25. 300
  26. 795
  27. 690
  28. 75
  29. 615
  30. 195
  31. 870
  32. 480
  33. 945
  34. 90
  35. 855
  36. 285
  37. 300
  38. 375
  39. 735
  40. 60

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