Calculón: build mental math skills through play

Calculón is a free web game for kids ages 10 to 12 to sharpen their mental math: addition, subtraction, multiplication, and division. Play through levels, earn stars, and compete on a leaderboard and in seasonal leagues. No sign-up, no personal information required.

How it helps kids practice math

Great for home and school

Calculón reinforces elementary school mental math in a fun, motivating way. Because it's free, requires no sign-up, and collects no personal data, it's easy to recommend in the classroom or for practice at home.

Frequently asked questions

Do I need to sign up or pay?

No. Calculón is free and only asks for a nickname for the leaderboard.

What devices does it work on?

In the browser on any computer, tablet, or phone.

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