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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 352 · 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. 1.8 × 15 =
  2. 2.34 × 15 =
  3. 3.57 × 15 =
  4. 4.38 × 15 =
  5. 5.54 × 15 =
  6. 6.57 × 15 =
  7. 7.46 × 15 =
  8. 8.58 × 15 =
  9. 9.11 × 15 =
  10. 10.5 × 15 =
  11. 11.31 × 15 =
  12. 12.60 × 15 =
  13. 13.48 × 15 =
  14. 14.16 × 15 =
  15. 15.30 × 15 =
  16. 16.49 × 15 =
  17. 17.6 × 15 =
  18. 18.49 × 15 =
  19. 19.16 × 15 =
  20. 20.5 × 15 =
  21. 21.39 × 15 =
  22. 22.46 × 15 =
  23. 23.43 × 15 =
  24. 24.56 × 15 =
  25. 25.21 × 15 =
  26. 26.51 × 15 =
  27. 27.37 × 15 =
  28. 28.60 × 15 =
  29. 29.39 × 15 =
  30. 30.24 × 15 =
  31. 31.39 × 15 =
  32. 32.50 × 15 =
  33. 33.12 × 15 =
  34. 34.5 × 15 =
  35. 35.30 × 15 =
  36. 36.37 × 15 =
  37. 37.44 × 15 =
  38. 38.42 × 15 =
  39. 39.43 × 15 =
  40. 40.14 × 15 =

Answer key

  1. 120
  2. 510
  3. 855
  4. 570
  5. 810
  6. 855
  7. 690
  8. 870
  9. 165
  10. 75
  11. 465
  12. 900
  13. 720
  14. 240
  15. 450
  16. 735
  17. 90
  18. 735
  19. 240
  20. 75
  21. 585
  22. 690
  23. 645
  24. 840
  25. 315
  26. 765
  27. 555
  28. 900
  29. 585
  30. 360
  31. 585
  32. 750
  33. 180
  34. 75
  35. 450
  36. 555
  37. 660
  38. 630
  39. 645
  40. 210

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