Math for Every Day
Each card is one real situation from a street, a shop, or a savings plan. Solve it in your head, flip the card, and see why the formula matters beyond the classroom.
300 problems · three levels · free to use · an account only saves progress
Made for parents, teachers and adult learners. Cards work without an account.
About
Who it's for
Lisbon Math meets you wherever your relationship with numbers is — whether you're rediscovering them, sharing them, or chasing them deeper.
FAQ
Short, honest answers to what parents and teachers ask us most.
Is it free?
Yes. All 300 problems are open, with no paywall and no trial.
Do I need an account?
No. An account only lets a parent save a child's progress over time.
Which ages is it for?
Three levels: 10–12, 13–15 and 16–18. Adults use it too.
Does it follow the Portuguese curriculum?
The problems follow the topics of ensino básico and secundário (5.º–12.º ano), set in everyday Lisbon situations. It is practice, not a textbook.
What do you do with my child's data?
A parent enters a first name and a colour, nothing else. Answers are stored to show progress. Nothing about children is ever sent to advertising platforms. See our privacy policy. Read the privacy policy.
Can I use the cards in class?
Yes, and there is a guide for teachers. Open the teacher's guide.
Keep going
Finished a deck? Here is where to go next.