Webmath.com: Doing math with fractionsHere's how to convert 1.25 to a fraction...

There is not much that can be done to figure out how to write 1.25 as a fraction, except to literally use what the decimal portion of your number, the .25, means.

Since there are 2 digits in 25, the very last digit is the "100th" decimal place.

So we can just say that .25 is the same as 25/100.

The fraction is not reduced to lowest terms. We can reduce this fraction to lowest
terms by dividing both the numerator and denominator by 25.

Why divide by 25? 25 is the Greatest Common Divisor (GCD)
or Greatest Common Factor (GCF) of the numbers 25 and 100.
So, this fraction reduced to lowest terms is

So your final answer is: 1.25 can be written as the fraction