HCF/LCM using Prime Factors (Junior Cert Mathematics): Quizzes

Largest number dividing numbers w/o remainder

Smallest number that is a multiple of all

A number divisible by 1 and itself only

$2$ and $3$

The smallest prime number, which is $2$

$2^2 \times 3^1 \times 5^1$

The lowest power in all factorisations

The highest power in any factorisation

$2^4 \times 5^1$

$20$

$240$

Simplifying fractions