Meet Acer, Our Favourite Four-Year-Old Numbers Whiz
If you haven't come across Acer yet, brace yourself: he's four years old, and his Countdown Numbers Game solves are genuinely astonishing to watch. Rachel Riley herself set him a puzzle to solve. A couple of his videos are below, because mental maths like his deserves an audience.
Well done, Acer! We are so impressed. His channel is run by his super-encouraging dad, and it's well worth a follow.
Want to cheer Acer on? Leave him a message in the comments below.

Comments
HeadlessChicken
Wow! He is such a maths prodigy. I wonder wether he ever finds some equations hard.