Divide it by itself.
When you make the fraction: 21 over 1 it is equal to the whole # 21
It is equal to 1.
0.01 is equal to 1/100 in fraction
It is equal to 1
if the fraction is 1/1 its one whole
A fraction is equal to one if its denominator and numerator are equal.
One trapezoid is 1 and, as a fraction, that is 1/1
90/180 = 1/2
When its numerator is the same as its denominator then the fraction is equal to 1 as for example 5/5 = 1
This is referred to as a "unit fraction".
6875 = 6875/1 in fraction
825 as a fraction = 825/1