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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 24 · 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. 2.46 × 15 =
  3. 3.10 × 15 =
  4. 4.21 × 15 =
  5. 5.8 × 15 =
  6. 6.11 × 15 =
  7. 7.43 × 15 =
  8. 8.44 × 15 =
  9. 9.50 × 15 =
  10. 10.45 × 15 =
  11. 11.20 × 15 =
  12. 12.41 × 15 =
  13. 13.5 × 15 =
  14. 14.26 × 15 =
  15. 15.18 × 15 =
  16. 16.4 × 15 =
  17. 17.48 × 15 =
  18. 18.39 × 15 =
  19. 19.25 × 15 =
  20. 20.38 × 15 =
  21. 21.17 × 15 =
  22. 22.37 × 15 =
  23. 23.12 × 15 =
  24. 24.28 × 15 =
  25. 25.60 × 15 =
  26. 26.18 × 15 =
  27. 27.17 × 15 =
  28. 28.14 × 15 =
  29. 29.64 × 15 =
  30. 30.5 × 15 =
  31. 31.52 × 15 =
  32. 32.30 × 15 =
  33. 33.57 × 15 =
  34. 34.58 × 15 =
  35. 35.50 × 15 =
  36. 36.44 × 15 =
  37. 37.16 × 15 =
  38. 38.37 × 15 =
  39. 39.16 × 15 =
  40. 40.55 × 15 =

Answer key

  1. 195
  2. 690
  3. 150
  4. 315
  5. 120
  6. 165
  7. 645
  8. 660
  9. 750
  10. 675
  11. 300
  12. 615
  13. 75
  14. 390
  15. 270
  16. 60
  17. 720
  18. 585
  19. 375
  20. 570
  21. 255
  22. 555
  23. 180
  24. 420
  25. 900
  26. 270
  27. 255
  28. 210
  29. 960
  30. 75
  31. 780
  32. 450
  33. 855
  34. 870
  35. 750
  36. 660
  37. 240
  38. 555
  39. 240
  40. 825

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