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How can you add up numbers without seeing them? Find out with this trick!

Why find only one card when you can find five?

What’s hiding behind all these calculations? Can you find the card that was picked?

A free online multiplayer game!

Ever heard of mystery operations puzzles?

It’s your turn to get wrapped up in mittens!

Discover a totally different way to use toilet paper!

The whole school can take part in this estimation challenge!

Estimate the number of macaroni noodles!