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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 567 · 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. 1.53 × 15 =
  2. 2.16 × 15 =
  3. 3.23 × 15 =
  4. 4.41 × 15 =
  5. 5.28 × 15 =
  6. 6.25 × 15 =
  7. 7.40 × 15 =
  8. 8.16 × 15 =
  9. 9.38 × 15 =
  10. 10.43 × 15 =
  11. 11.45 × 15 =
  12. 12.19 × 15 =
  13. 13.40 × 15 =
  14. 14.51 × 15 =
  15. 15.49 × 15 =
  16. 16.13 × 15 =
  17. 17.54 × 15 =
  18. 18.7 × 15 =
  19. 19.44 × 15 =
  20. 20.4 × 15 =
  21. 21.20 × 15 =
  22. 22.63 × 15 =
  23. 23.58 × 15 =
  24. 24.23 × 15 =
  25. 25.56 × 15 =
  26. 26.40 × 15 =
  27. 27.5 × 15 =
  28. 28.56 × 15 =
  29. 29.56 × 15 =
  30. 30.13 × 15 =
  31. 31.14 × 15 =
  32. 32.55 × 15 =
  33. 33.46 × 15 =
  34. 34.47 × 15 =
  35. 35.24 × 15 =
  36. 36.55 × 15 =
  37. 37.53 × 15 =
  38. 38.61 × 15 =
  39. 39.47 × 15 =
  40. 40.49 × 15 =

Answer key

  1. 795
  2. 240
  3. 345
  4. 615
  5. 420
  6. 375
  7. 600
  8. 240
  9. 570
  10. 645
  11. 675
  12. 285
  13. 600
  14. 765
  15. 735
  16. 195
  17. 810
  18. 105
  19. 660
  20. 60
  21. 300
  22. 945
  23. 870
  24. 345
  25. 840
  26. 600
  27. 75
  28. 840
  29. 840
  30. 195
  31. 210
  32. 825
  33. 690
  34. 705
  35. 360
  36. 825
  37. 795
  38. 915
  39. 705
  40. 735

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