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What is an ordinary score? What's the approximate score?
Decrement: it is said that the decrement is divided into a number equal to it, but the numerator and denominator of the fraction are relatively small;

Comprehensive score: changing scores of different denominators into scores of the same denominator is equal to the original score, which is called comprehensive score.

Extended data:

General fraction means to change a fraction into a fraction equal to it, but with smaller numerator and denominator, which is called approximate fraction. Simplest fraction: The numerator and denominator are fractions of prime numbers, which are called simplest fraction.

A fraction whose numerator and denominator have only one common factor 1 is called simplest fraction or a fraction whose numerator and denominator are prime numbers is called simplest fraction, which is also called reduced fraction. Simplest fraction is also called reduced fraction, which can be understood as reduced fraction, that is, both numerator and denominator are prime numbers.