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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 933 · 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. 1.46 × 15 =
  2. 2.39 × 15 =
  3. 3.33 × 15 =
  4. 4.49 × 15 =
  5. 5.44 × 15 =
  6. 6.37 × 15 =
  7. 7.7 × 15 =
  8. 8.54 × 15 =
  9. 9.24 × 15 =
  10. 10.7 × 15 =
  11. 11.58 × 15 =
  12. 12.7 × 15 =
  13. 13.52 × 15 =
  14. 14.55 × 15 =
  15. 15.30 × 15 =
  16. 16.53 × 15 =
  17. 17.51 × 15 =
  18. 18.49 × 15 =
  19. 19.32 × 15 =
  20. 20.17 × 15 =
  21. 21.20 × 15 =
  22. 22.63 × 15 =
  23. 23.17 × 15 =
  24. 24.17 × 15 =
  25. 25.18 × 15 =
  26. 26.38 × 15 =
  27. 27.52 × 15 =
  28. 28.33 × 15 =
  29. 29.31 × 15 =
  30. 30.56 × 15 =
  31. 31.7 × 15 =
  32. 32.19 × 15 =
  33. 33.43 × 15 =
  34. 34.61 × 15 =
  35. 35.21 × 15 =
  36. 36.55 × 15 =
  37. 37.14 × 15 =
  38. 38.30 × 15 =
  39. 39.5 × 15 =
  40. 40.34 × 15 =

Answer key

  1. 690
  2. 585
  3. 495
  4. 735
  5. 660
  6. 555
  7. 105
  8. 810
  9. 360
  10. 105
  11. 870
  12. 105
  13. 780
  14. 825
  15. 450
  16. 795
  17. 765
  18. 735
  19. 480
  20. 255
  21. 300
  22. 945
  23. 255
  24. 255
  25. 270
  26. 570
  27. 780
  28. 495
  29. 465
  30. 840
  31. 105
  32. 285
  33. 645
  34. 915
  35. 315
  36. 825
  37. 210
  38. 450
  39. 75
  40. 510

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