Make change from £50 and £100 notes

Count up to the next ten first, then to the note.

1. Something costs £11. You pay with a £50 note. How much change do you get?
2. Something costs £47. You pay with a £50 note. How much change do you get?
3. Something costs £26. You pay with a £100 note. How much change do you get?
4. Something costs £3. You pay with a £100 note. How much change do you get?
5. Something costs £41. You pay with a £100 note. How much change do you get?
6. Something costs £30. You pay with a £100 note. How much change do you get?
7. Something costs £23. You pay with a £100 note. How much change do you get?
8. Something costs £87. You pay with a £100 note. How much change do you get?
9. Something costs £23. You pay with a £50 note. How much change do you get?
10. Something costs £10. You pay with a £20 note. How much change do you get?
11. Something costs £7. You pay with a £20 note. How much change do you get?
12. Something costs £42. You pay with a £50 note. How much change do you get?
13. Something costs £14. You pay with a £50 note. How much change do you get?
14. Something costs £13. You pay with a £20 note. How much change do you get?
15. Something costs £5. You pay with a £10 note. How much change do you get?
16. Something costs £6. You pay with a £50 note. How much change do you get?
17. Something costs £11. You pay with a £20 note. How much change do you get?
18. Something costs £24. You pay with a £50 note. How much change do you get?
19. Something costs £1. You pay with a £20 note. How much change do you get?
20. Something costs £85. You pay with a £100 note. How much change do you get?