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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 972 · 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. 1.12 × 15 =
  2. 2.41 × 15 =
  3. 3.61 × 15 =
  4. 4.8 × 15 =
  5. 5.17 × 15 =
  6. 6.7 × 15 =
  7. 7.46 × 15 =
  8. 8.53 × 15 =
  9. 9.39 × 15 =
  10. 10.35 × 15 =
  11. 11.37 × 15 =
  12. 12.47 × 15 =
  13. 13.6 × 15 =
  14. 14.41 × 15 =
  15. 15.44 × 15 =
  16. 16.25 × 15 =
  17. 17.19 × 15 =
  18. 18.43 × 15 =
  19. 19.6 × 15 =
  20. 20.62 × 15 =
  21. 21.16 × 15 =
  22. 22.59 × 15 =
  23. 23.24 × 15 =
  24. 24.7 × 15 =
  25. 25.64 × 15 =
  26. 26.38 × 15 =
  27. 27.20 × 15 =
  28. 28.19 × 15 =
  29. 29.38 × 15 =
  30. 30.39 × 15 =
  31. 31.30 × 15 =
  32. 32.44 × 15 =
  33. 33.48 × 15 =
  34. 34.6 × 15 =
  35. 35.13 × 15 =
  36. 36.13 × 15 =
  37. 37.19 × 15 =
  38. 38.14 × 15 =
  39. 39.26 × 15 =
  40. 40.5 × 15 =

Answer key

  1. 180
  2. 615
  3. 915
  4. 120
  5. 255
  6. 105
  7. 690
  8. 795
  9. 585
  10. 525
  11. 555
  12. 705
  13. 90
  14. 615
  15. 660
  16. 375
  17. 285
  18. 645
  19. 90
  20. 930
  21. 240
  22. 885
  23. 360
  24. 105
  25. 960
  26. 570
  27. 300
  28. 285
  29. 570
  30. 585
  31. 450
  32. 660
  33. 720
  34. 90
  35. 195
  36. 195
  37. 285
  38. 210
  39. 390
  40. 75

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