Can you solve it? Can you battle like a maths wizard?
Try your hand at these puzzles for smart 12-year-olds
11 plus exam: 24 questions from the test to see if you would be able to pass it
Are you smarter than an 11 year old?
Take the 11+ test and see if you could get into a grammar school
We bet you get at least a couple wrong - it's not as easy as you might think!