a nod in the direction of the fundamental theorem of arithmetic
and to provide a reason for 1 not being considered a prime number
which can be done with or without ("find all the ways to break down 90") this sheet
some great factor trees drawn by students in Y5 at the International School of Toulouse
what are the missing numbers in this lattice?
find a way to break down 720 into a product of prime factors that fits this tree: