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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 203 · 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. 1.4 × 15 =
  2. 2.33 × 15 =
  3. 3.41 × 15 =
  4. 4.24 × 15 =
  5. 5.37 × 15 =
  6. 6.49 × 15 =
  7. 7.4 × 15 =
  8. 8.6 × 15 =
  9. 9.61 × 15 =
  10. 10.20 × 15 =
  11. 11.56 × 15 =
  12. 12.11 × 15 =
  13. 13.46 × 15 =
  14. 14.58 × 15 =
  15. 15.60 × 15 =
  16. 16.11 × 15 =
  17. 17.16 × 15 =
  18. 18.63 × 15 =
  19. 19.54 × 15 =
  20. 20.38 × 15 =
  21. 21.51 × 15 =
  22. 22.62 × 15 =
  23. 23.10 × 15 =
  24. 24.32 × 15 =
  25. 25.25 × 15 =
  26. 26.44 × 15 =
  27. 27.38 × 15 =
  28. 28.40 × 15 =
  29. 29.51 × 15 =
  30. 30.44 × 15 =
  31. 31.16 × 15 =
  32. 32.49 × 15 =
  33. 33.24 × 15 =
  34. 34.6 × 15 =
  35. 35.43 × 15 =
  36. 36.34 × 15 =
  37. 37.53 × 15 =
  38. 38.24 × 15 =
  39. 39.57 × 15 =
  40. 40.37 × 15 =

Answer key

  1. 60
  2. 495
  3. 615
  4. 360
  5. 555
  6. 735
  7. 60
  8. 90
  9. 915
  10. 300
  11. 840
  12. 165
  13. 690
  14. 870
  15. 900
  16. 165
  17. 240
  18. 945
  19. 810
  20. 570
  21. 765
  22. 930
  23. 150
  24. 480
  25. 375
  26. 660
  27. 570
  28. 600
  29. 765
  30. 660
  31. 240
  32. 735
  33. 360
  34. 90
  35. 645
  36. 510
  37. 795
  38. 360
  39. 855
  40. 555

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