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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 986 · 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. 1.51 × 15 =
  2. 2.63 × 15 =
  3. 3.45 × 15 =
  4. 4.22 × 15 =
  5. 5.7 × 15 =
  6. 6.50 × 15 =
  7. 7.63 × 15 =
  8. 8.36 × 15 =
  9. 9.11 × 15 =
  10. 10.46 × 15 =
  11. 11.19 × 15 =
  12. 12.53 × 15 =
  13. 13.21 × 15 =
  14. 14.22 × 15 =
  15. 15.29 × 15 =
  16. 16.13 × 15 =
  17. 17.56 × 15 =
  18. 18.25 × 15 =
  19. 19.59 × 15 =
  20. 20.61 × 15 =
  21. 21.34 × 15 =
  22. 22.22 × 15 =
  23. 23.60 × 15 =
  24. 24.27 × 15 =
  25. 25.49 × 15 =
  26. 26.13 × 15 =
  27. 27.41 × 15 =
  28. 28.20 × 15 =
  29. 29.32 × 15 =
  30. 30.10 × 15 =
  31. 31.9 × 15 =
  32. 32.57 × 15 =
  33. 33.48 × 15 =
  34. 34.45 × 15 =
  35. 35.11 × 15 =
  36. 36.12 × 15 =
  37. 37.24 × 15 =
  38. 38.15 × 15 =
  39. 39.20 × 15 =
  40. 40.20 × 15 =

Answer key

  1. 765
  2. 945
  3. 675
  4. 330
  5. 105
  6. 750
  7. 945
  8. 540
  9. 165
  10. 690
  11. 285
  12. 795
  13. 315
  14. 330
  15. 435
  16. 195
  17. 840
  18. 375
  19. 885
  20. 915
  21. 510
  22. 330
  23. 900
  24. 405
  25. 735
  26. 195
  27. 615
  28. 300
  29. 480
  30. 150
  31. 135
  32. 855
  33. 720
  34. 675
  35. 165
  36. 180
  37. 360
  38. 225
  39. 300
  40. 300

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