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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 957 · 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. 1.9 × 15 =
  2. 2.40 × 15 =
  3. 3.11 × 15 =
  4. 4.53 × 15 =
  5. 5.51 × 15 =
  6. 6.63 × 15 =
  7. 7.4 × 15 =
  8. 8.30 × 15 =
  9. 9.11 × 15 =
  10. 10.50 × 15 =
  11. 11.59 × 15 =
  12. 12.56 × 15 =
  13. 13.7 × 15 =
  14. 14.30 × 15 =
  15. 15.62 × 15 =
  16. 16.10 × 15 =
  17. 17.64 × 15 =
  18. 18.46 × 15 =
  19. 19.4 × 15 =
  20. 20.19 × 15 =
  21. 21.59 × 15 =
  22. 22.4 × 15 =
  23. 23.52 × 15 =
  24. 24.64 × 15 =
  25. 25.41 × 15 =
  26. 26.22 × 15 =
  27. 27.37 × 15 =
  28. 28.5 × 15 =
  29. 29.16 × 15 =
  30. 30.58 × 15 =
  31. 31.64 × 15 =
  32. 32.25 × 15 =
  33. 33.30 × 15 =
  34. 34.55 × 15 =
  35. 35.32 × 15 =
  36. 36.48 × 15 =
  37. 37.34 × 15 =
  38. 38.17 × 15 =
  39. 39.5 × 15 =
  40. 40.16 × 15 =

Answer key

  1. 135
  2. 600
  3. 165
  4. 795
  5. 765
  6. 945
  7. 60
  8. 450
  9. 165
  10. 750
  11. 885
  12. 840
  13. 105
  14. 450
  15. 930
  16. 150
  17. 960
  18. 690
  19. 60
  20. 285
  21. 885
  22. 60
  23. 780
  24. 960
  25. 615
  26. 330
  27. 555
  28. 75
  29. 240
  30. 870
  31. 960
  32. 375
  33. 450
  34. 825
  35. 480
  36. 720
  37. 510
  38. 255
  39. 75
  40. 240

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