Is Doubling Doors free?

Yes. Doubling Doors is completely free, with no ads, no sign-up and no download. It plays right in your web browser.

What does Doubling Doors teach?

Doubling Doors is a free doubling and halving game that teaches a real math skill. Run and pick the door with the answer in Doubling Doors, a free doubling and halving math game that teaches doubles, halves, and 1 more or 1 less. Plays in your browser.

THE NUMBER DASH

DOUBLING DOORS

Keep running and pick the right door! Work out the answer, then send your runner through the door with that number. The wrong door bumps you back.

🧠work it out

🚪pick the door

🏃dash through

JOGGER

1 more/less, doubles to 10

SPRINTER

double & halve to 20