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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 435 · 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. 1.57 × 15 =
  2. 2.6 × 15 =
  3. 3.63 × 15 =
  4. 4.13 × 15 =
  5. 5.16 × 15 =
  6. 6.13 × 15 =
  7. 7.41 × 15 =
  8. 8.44 × 15 =
  9. 9.13 × 15 =
  10. 10.7 × 15 =
  11. 11.9 × 15 =
  12. 12.13 × 15 =
  13. 13.61 × 15 =
  14. 14.19 × 15 =
  15. 15.39 × 15 =
  16. 16.13 × 15 =
  17. 17.17 × 15 =
  18. 18.6 × 15 =
  19. 19.46 × 15 =
  20. 20.41 × 15 =
  21. 21.8 × 15 =
  22. 22.52 × 15 =
  23. 23.46 × 15 =
  24. 24.26 × 15 =
  25. 25.43 × 15 =
  26. 26.48 × 15 =
  27. 27.46 × 15 =
  28. 28.52 × 15 =
  29. 29.32 × 15 =
  30. 30.54 × 15 =
  31. 31.6 × 15 =
  32. 32.26 × 15 =
  33. 33.20 × 15 =
  34. 34.47 × 15 =
  35. 35.6 × 15 =
  36. 36.9 × 15 =
  37. 37.61 × 15 =
  38. 38.52 × 15 =
  39. 39.26 × 15 =
  40. 40.13 × 15 =

Answer key

  1. 855
  2. 90
  3. 945
  4. 195
  5. 240
  6. 195
  7. 615
  8. 660
  9. 195
  10. 105
  11. 135
  12. 195
  13. 915
  14. 285
  15. 585
  16. 195
  17. 255
  18. 90
  19. 690
  20. 615
  21. 120
  22. 780
  23. 690
  24. 390
  25. 645
  26. 720
  27. 690
  28. 780
  29. 480
  30. 810
  31. 90
  32. 390
  33. 300
  34. 705
  35. 90
  36. 135
  37. 915
  38. 780
  39. 390
  40. 195

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