Express 0.64 as a fraction in lowest term?

A. 64/10

B. 5/32

C. 4/5

D. 16/25

In its decimal form, it says ' 64 / 100 '.

In order to change it to its lowest terms, we look to see whether the

numerator and denominator have a common factor greater than ' 1 '.

If they do, then we can divide numerator and denominator by their

common factor, and have the same fraction in lower terms.

The common factors of 64 and 100 are 1, 2, and 4.

We could divide top and bottom by 2, but that wouldn't finish the job.

It's always best to divide them by theirgreatest common factor, and

once you do that, you're done.

Dividing the numerator and denominator both by 4,

we get the fraction in its lowest terms:

0.64 = 64/100 = 16/25