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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 189 · 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. 2.46 × 15 =
  3. 3.58 × 15 =
  4. 4.52 × 15 =
  5. 5.28 × 15 =
  6. 6.64 × 15 =
  7. 7.55 × 15 =
  8. 8.44 × 15 =
  9. 9.25 × 15 =
  10. 10.53 × 15 =
  11. 11.45 × 15 =
  12. 12.54 × 15 =
  13. 13.36 × 15 =
  14. 14.61 × 15 =
  15. 15.26 × 15 =
  16. 16.6 × 15 =
  17. 17.62 × 15 =
  18. 18.49 × 15 =
  19. 19.4 × 15 =
  20. 20.10 × 15 =
  21. 21.22 × 15 =
  22. 22.51 × 15 =
  23. 23.60 × 15 =
  24. 24.56 × 15 =
  25. 25.9 × 15 =
  26. 26.10 × 15 =
  27. 27.23 × 15 =
  28. 28.47 × 15 =
  29. 29.36 × 15 =
  30. 30.31 × 15 =
  31. 31.20 × 15 =
  32. 32.64 × 15 =
  33. 33.25 × 15 =
  34. 34.14 × 15 =
  35. 35.57 × 15 =
  36. 36.19 × 15 =
  37. 37.42 × 15 =
  38. 38.57 × 15 =
  39. 39.37 × 15 =
  40. 40.6 × 15 =

Answer key

  1. 60
  2. 690
  3. 870
  4. 780
  5. 420
  6. 960
  7. 825
  8. 660
  9. 375
  10. 795
  11. 675
  12. 810
  13. 540
  14. 915
  15. 390
  16. 90
  17. 930
  18. 735
  19. 60
  20. 150
  21. 330
  22. 765
  23. 900
  24. 840
  25. 135
  26. 150
  27. 345
  28. 705
  29. 540
  30. 465
  31. 300
  32. 960
  33. 375
  34. 210
  35. 855
  36. 285
  37. 630
  38. 855
  39. 555
  40. 90

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