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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 955 · 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. 1.61 × 15 =
  2. 2.58 × 15 =
  3. 3.16 × 15 =
  4. 4.7 × 15 =
  5. 5.24 × 15 =
  6. 6.35 × 15 =
  7. 7.23 × 15 =
  8. 8.12 × 15 =
  9. 9.24 × 15 =
  10. 10.13 × 15 =
  11. 11.60 × 15 =
  12. 12.58 × 15 =
  13. 13.12 × 15 =
  14. 14.34 × 15 =
  15. 15.56 × 15 =
  16. 16.63 × 15 =
  17. 17.8 × 15 =
  18. 18.57 × 15 =
  19. 19.25 × 15 =
  20. 20.33 × 15 =
  21. 21.64 × 15 =
  22. 22.24 × 15 =
  23. 23.43 × 15 =
  24. 24.18 × 15 =
  25. 25.19 × 15 =
  26. 26.58 × 15 =
  27. 27.62 × 15 =
  28. 28.44 × 15 =
  29. 29.27 × 15 =
  30. 30.35 × 15 =
  31. 31.43 × 15 =
  32. 32.16 × 15 =
  33. 33.17 × 15 =
  34. 34.15 × 15 =
  35. 35.7 × 15 =
  36. 36.49 × 15 =
  37. 37.62 × 15 =
  38. 38.34 × 15 =
  39. 39.17 × 15 =
  40. 40.14 × 15 =

Answer key

  1. 915
  2. 870
  3. 240
  4. 105
  5. 360
  6. 525
  7. 345
  8. 180
  9. 360
  10. 195
  11. 900
  12. 870
  13. 180
  14. 510
  15. 840
  16. 945
  17. 120
  18. 855
  19. 375
  20. 495
  21. 960
  22. 360
  23. 645
  24. 270
  25. 285
  26. 870
  27. 930
  28. 660
  29. 405
  30. 525
  31. 645
  32. 240
  33. 255
  34. 225
  35. 105
  36. 735
  37. 930
  38. 510
  39. 255
  40. 210

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