We did a rich maths task that was pretty interesting and more challenging that we first thought. It's called Four 4s. The aim was to make each number from 0-20 using only four 4s! We used factorial 4 (4!), the square root of 4, 4 to the power of 2, division, multiplication, addition and subtraction. Some numbers were harder to solve than others but we had an fun time doing so.
I remember doing that! It was a very hard challenge but I tried it!
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