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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 169 · 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. 1.52 × 15 =
  2. 2.62 × 15 =
  3. 3.28 × 15 =
  4. 4.41 × 15 =
  5. 5.34 × 15 =
  6. 6.19 × 15 =
  7. 7.24 × 15 =
  8. 8.32 × 15 =
  9. 9.34 × 15 =
  10. 10.19 × 15 =
  11. 11.40 × 15 =
  12. 12.26 × 15 =
  13. 13.15 × 15 =
  14. 14.41 × 15 =
  15. 15.4 × 15 =
  16. 16.35 × 15 =
  17. 17.17 × 15 =
  18. 18.41 × 15 =
  19. 19.30 × 15 =
  20. 20.36 × 15 =
  21. 21.30 × 15 =
  22. 22.44 × 15 =
  23. 23.53 × 15 =
  24. 24.19 × 15 =
  25. 25.55 × 15 =
  26. 26.44 × 15 =
  27. 27.46 × 15 =
  28. 28.61 × 15 =
  29. 29.28 × 15 =
  30. 30.62 × 15 =
  31. 31.29 × 15 =
  32. 32.16 × 15 =
  33. 33.32 × 15 =
  34. 34.11 × 15 =
  35. 35.30 × 15 =
  36. 36.20 × 15 =
  37. 37.45 × 15 =
  38. 38.55 × 15 =
  39. 39.18 × 15 =
  40. 40.7 × 15 =

Answer key

  1. 780
  2. 930
  3. 420
  4. 615
  5. 510
  6. 285
  7. 360
  8. 480
  9. 510
  10. 285
  11. 600
  12. 390
  13. 225
  14. 615
  15. 60
  16. 525
  17. 255
  18. 615
  19. 450
  20. 540
  21. 450
  22. 660
  23. 795
  24. 285
  25. 825
  26. 660
  27. 690
  28. 915
  29. 420
  30. 930
  31. 435
  32. 240
  33. 480
  34. 165
  35. 450
  36. 300
  37. 675
  38. 825
  39. 270
  40. 105

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