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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 975 · 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. 1.19 × 15 =
  2. 2.6 × 15 =
  3. 3.41 × 15 =
  4. 4.26 × 15 =
  5. 5.57 × 15 =
  6. 6.40 × 15 =
  7. 7.14 × 15 =
  8. 8.23 × 15 =
  9. 9.47 × 15 =
  10. 10.57 × 15 =
  11. 11.8 × 15 =
  12. 12.17 × 15 =
  13. 13.24 × 15 =
  14. 14.56 × 15 =
  15. 15.13 × 15 =
  16. 16.19 × 15 =
  17. 17.20 × 15 =
  18. 18.45 × 15 =
  19. 19.32 × 15 =
  20. 20.45 × 15 =
  21. 21.34 × 15 =
  22. 22.62 × 15 =
  23. 23.19 × 15 =
  24. 24.58 × 15 =
  25. 25.59 × 15 =
  26. 26.11 × 15 =
  27. 27.49 × 15 =
  28. 28.38 × 15 =
  29. 29.60 × 15 =
  30. 30.12 × 15 =
  31. 31.56 × 15 =
  32. 32.24 × 15 =
  33. 33.21 × 15 =
  34. 34.41 × 15 =
  35. 35.22 × 15 =
  36. 36.34 × 15 =
  37. 37.55 × 15 =
  38. 38.39 × 15 =
  39. 39.13 × 15 =
  40. 40.48 × 15 =

Answer key

  1. 285
  2. 90
  3. 615
  4. 390
  5. 855
  6. 600
  7. 210
  8. 345
  9. 705
  10. 855
  11. 120
  12. 255
  13. 360
  14. 840
  15. 195
  16. 285
  17. 300
  18. 675
  19. 480
  20. 675
  21. 510
  22. 930
  23. 285
  24. 870
  25. 885
  26. 165
  27. 735
  28. 570
  29. 900
  30. 180
  31. 840
  32. 360
  33. 315
  34. 615
  35. 330
  36. 510
  37. 825
  38. 585
  39. 195
  40. 720

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