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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 770 · 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. 1.37 × 15 =
  2. 2.5 × 15 =
  3. 3.35 × 15 =
  4. 4.42 × 15 =
  5. 5.51 × 15 =
  6. 6.17 × 15 =
  7. 7.9 × 15 =
  8. 8.6 × 15 =
  9. 9.41 × 15 =
  10. 10.29 × 15 =
  11. 11.31 × 15 =
  12. 12.56 × 15 =
  13. 13.5 × 15 =
  14. 14.39 × 15 =
  15. 15.13 × 15 =
  16. 16.5 × 15 =
  17. 17.37 × 15 =
  18. 18.60 × 15 =
  19. 19.15 × 15 =
  20. 20.27 × 15 =
  21. 21.40 × 15 =
  22. 22.26 × 15 =
  23. 23.44 × 15 =
  24. 24.44 × 15 =
  25. 25.36 × 15 =
  26. 26.9 × 15 =
  27. 27.38 × 15 =
  28. 28.18 × 15 =
  29. 29.16 × 15 =
  30. 30.6 × 15 =
  31. 31.31 × 15 =
  32. 32.25 × 15 =
  33. 33.7 × 15 =
  34. 34.43 × 15 =
  35. 35.63 × 15 =
  36. 36.9 × 15 =
  37. 37.34 × 15 =
  38. 38.40 × 15 =
  39. 39.14 × 15 =
  40. 40.40 × 15 =

Answer key

  1. 555
  2. 75
  3. 525
  4. 630
  5. 765
  6. 255
  7. 135
  8. 90
  9. 615
  10. 435
  11. 465
  12. 840
  13. 75
  14. 585
  15. 195
  16. 75
  17. 555
  18. 900
  19. 225
  20. 405
  21. 600
  22. 390
  23. 660
  24. 660
  25. 540
  26. 135
  27. 570
  28. 270
  29. 240
  30. 90
  31. 465
  32. 375
  33. 105
  34. 645
  35. 945
  36. 135
  37. 510
  38. 600
  39. 210
  40. 600

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