Simplest fraction: The reciprocal of numerator and denominator is called simplest fraction.

Note: Try to count with your mouth when dividing points. Generally, the numerator sum is used to convert a fraction into a fraction equal to it, but the numerator and denominator are relatively small, which is called reduction. The common factor of denominator (except 1) removes the numerator and denominator of the fraction; Usually, we have to separate it until we get the simplest score.

If the greatest common factor of numerator and denominator can be seen quickly, it is easier to divide them directly.

Writing:

12 /30= 15/6=5/2

Divider is to find its common factor, that is, the common factor of numerator and denominator. You can't just simplify the denominator or numerator, divide it slowly, and then multiply all the divisors you divide to be their greatest common divisor.

The process of turning a fraction into the simplest fraction is called approximate fraction.

You can find the greatest common divisor of numerator and denominator and convert it into the simplest fraction.