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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 964 · 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. 1.42 × 15 =
  2. 2.26 × 15 =
  3. 3.26 × 15 =
  4. 4.11 × 15 =
  5. 5.44 × 15 =
  6. 6.21 × 15 =
  7. 7.58 × 15 =
  8. 8.61 × 15 =
  9. 9.61 × 15 =
  10. 10.14 × 15 =
  11. 11.19 × 15 =
  12. 12.8 × 15 =
  13. 13.47 × 15 =
  14. 14.24 × 15 =
  15. 15.8 × 15 =
  16. 16.57 × 15 =
  17. 17.63 × 15 =
  18. 18.13 × 15 =
  19. 19.44 × 15 =
  20. 20.16 × 15 =
  21. 21.51 × 15 =
  22. 22.41 × 15 =
  23. 23.19 × 15 =
  24. 24.12 × 15 =
  25. 25.19 × 15 =
  26. 26.6 × 15 =
  27. 27.44 × 15 =
  28. 28.7 × 15 =
  29. 29.19 × 15 =
  30. 30.7 × 15 =
  31. 31.48 × 15 =
  32. 32.37 × 15 =
  33. 33.42 × 15 =
  34. 34.28 × 15 =
  35. 35.19 × 15 =
  36. 36.15 × 15 =
  37. 37.39 × 15 =
  38. 38.17 × 15 =
  39. 39.39 × 15 =
  40. 40.20 × 15 =

Answer key

  1. 630
  2. 390
  3. 390
  4. 165
  5. 660
  6. 315
  7. 870
  8. 915
  9. 915
  10. 210
  11. 285
  12. 120
  13. 705
  14. 360
  15. 120
  16. 855
  17. 945
  18. 195
  19. 660
  20. 240
  21. 765
  22. 615
  23. 285
  24. 180
  25. 285
  26. 90
  27. 660
  28. 105
  29. 285
  30. 105
  31. 720
  32. 555
  33. 630
  34. 420
  35. 285
  36. 225
  37. 585
  38. 255
  39. 585
  40. 300

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