Fractions with numerator less than denominator are called true fractions and less than 1.

Fractions with numerator greater than denominator or numerator equal to denominator are called false fractions, which are greater than 1 or equal to 1.

Turning a fraction into a fraction that is equal to it but smaller in numerator and denominator is called reduction. Simplification applies the basic properties of fractions.

Fraction simplification includes two steps: one is reduction; The second is to turn false scores into integers or fractions.

Dividing the scores of different denominators by the scores of the same denominator equals the original score, which is called the total score. The basis of the total score is the basic nature of the score.

=0.5

=0.25

=0.75

=0.2

=0.4

=0.6

=0.8

=0. 125

=0.375

=0.625

=0.875

=0.05

=0.04。

Addition and subtraction of fractions

Addition and subtraction of fractions with the same denominator: denominator remains unchanged, only numerator is added and subtracted.

Addition and subtraction of fractions with different denominators: divide first, and then calculate according to the addition and subtraction of fractions with the same denominator.

Addition and subtraction of fractions:

Add and subtract fractions, add and subtract integer parts and fraction parts respectively, and then merge the results.