← × 15: ten plus half lesson New set →

Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 20 · 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. 1.6 × 15 =
  2. 2.7 × 15 =
  3. 3.19 × 15 =
  4. 4.30 × 15 =
  5. 5.25 × 15 =
  6. 6.51 × 15 =
  7. 7.44 × 15 =
  8. 8.31 × 15 =
  9. 9.38 × 15 =
  10. 10.53 × 15 =
  11. 11.41 × 15 =
  12. 12.63 × 15 =
  13. 13.53 × 15 =
  14. 14.5 × 15 =
  15. 15.5 × 15 =
  16. 16.45 × 15 =
  17. 17.22 × 15 =
  18. 18.11 × 15 =
  19. 19.62 × 15 =
  20. 20.63 × 15 =
  21. 21.23 × 15 =
  22. 22.20 × 15 =
  23. 23.11 × 15 =
  24. 24.42 × 15 =
  25. 25.57 × 15 =
  26. 26.36 × 15 =
  27. 27.15 × 15 =
  28. 28.36 × 15 =
  29. 29.57 × 15 =
  30. 30.27 × 15 =
  31. 31.51 × 15 =
  32. 32.35 × 15 =
  33. 33.17 × 15 =
  34. 34.30 × 15 =
  35. 35.7 × 15 =
  36. 36.60 × 15 =
  37. 37.14 × 15 =
  38. 38.34 × 15 =
  39. 39.37 × 15 =
  40. 40.38 × 15 =

Answer key

  1. 90
  2. 105
  3. 285
  4. 450
  5. 375
  6. 765
  7. 660
  8. 465
  9. 570
  10. 795
  11. 615
  12. 945
  13. 795
  14. 75
  15. 75
  16. 675
  17. 330
  18. 165
  19. 930
  20. 945
  21. 345
  22. 300
  23. 165
  24. 630
  25. 855
  26. 540
  27. 225
  28. 540
  29. 855
  30. 405
  31. 765
  32. 525
  33. 255
  34. 450
  35. 105
  36. 900
  37. 210
  38. 510
  39. 555
  40. 570

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths