Practise solving ratio problems and explore the different forms they take with BBC Bitesize Maths. For students between the ages of 11 and 14.

Solve real-world rate, ratio, proportion and percent problems involving discounts, markups, markdowns, interest, taxes, tips, commissions, percent increase or decrease. Example: At a “25% Off ...

I gave an example I used with my child. If you're a parent of a school-age child, that's also a great way to introduce this problem-solving framework into your family.