Number Theory
HCF, LCM and Prime Factorisation
Interactive practice questions
Consider the number $225$225.
a
First, write $225$225 as a product of prime factors. Give your answer in expanded form.
b
Now list all factors of $225$225, separating factors with a comma.
Easy
4min
Consider splitting $60$60 into its factors by using a factor tree:
Easy
4min
We want to find all factors of $30$30 by using a factor tree.
Easy
2min
Write $72$72 as a product of prime factors in index form.
Easy
2min
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