A fraction is ______.
the ratio of the number of parts considered to the total number of parts.
Consider the following example.
Suppose you have a pizza.
Divide the whole pizza into 4 parts.
Now, take 3 parts out of the 4 parts.
These 3 parts represent the fraction 3 out of 4, i.e., 34.
i.e., a fraction is the ratio of the number of divisions considered to the total number of divisions.