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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 394 · 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. 1.62 × 15 =
  2. 2.6 × 15 =
  3. 3.57 × 15 =
  4. 4.46 × 15 =
  5. 5.7 × 15 =
  6. 6.53 × 15 =
  7. 7.44 × 15 =
  8. 8.44 × 15 =
  9. 9.26 × 15 =
  10. 10.16 × 15 =
  11. 11.51 × 15 =
  12. 12.45 × 15 =
  13. 13.41 × 15 =
  14. 14.60 × 15 =
  15. 15.28 × 15 =
  16. 16.4 × 15 =
  17. 17.55 × 15 =
  18. 18.49 × 15 =
  19. 19.42 × 15 =
  20. 20.30 × 15 =
  21. 21.6 × 15 =
  22. 22.22 × 15 =
  23. 23.53 × 15 =
  24. 24.11 × 15 =
  25. 25.53 × 15 =
  26. 26.60 × 15 =
  27. 27.52 × 15 =
  28. 28.37 × 15 =
  29. 29.36 × 15 =
  30. 30.20 × 15 =
  31. 31.35 × 15 =
  32. 32.10 × 15 =
  33. 33.13 × 15 =
  34. 34.6 × 15 =
  35. 35.47 × 15 =
  36. 36.10 × 15 =
  37. 37.63 × 15 =
  38. 38.21 × 15 =
  39. 39.40 × 15 =
  40. 40.55 × 15 =

Answer key

  1. 930
  2. 90
  3. 855
  4. 690
  5. 105
  6. 795
  7. 660
  8. 660
  9. 390
  10. 240
  11. 765
  12. 675
  13. 615
  14. 900
  15. 420
  16. 60
  17. 825
  18. 735
  19. 630
  20. 450
  21. 90
  22. 330
  23. 795
  24. 165
  25. 795
  26. 900
  27. 780
  28. 555
  29. 540
  30. 300
  31. 525
  32. 150
  33. 195
  34. 90
  35. 705
  36. 150
  37. 945
  38. 315
  39. 600
  40. 825

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