Question

How do you change 2.5 into a fraction a decimal to a fraction?

Answer 1

You put it over it’s number place so since .5 is in the tenths place you put it over 10
So it would be 2 5/10 after simplifying you get 2 1/2

Answer 2

Hmm, this is a breddy simple one, I'll use your provided number as an example.
$2.5$
you immediately can separate the whole numbers to make for 0.5, which is five tenths, or 5/10, which can be simplified to one half, and if you want a mixed number you stop there, giving you
$2 \frac{1}{2}$
but you can multiply your whole number by the denominator (bottom part), and recieve
$\frac{5}{2}$
these two are identical numbers, just written differently

hopefully I helped :DDDD