You can understand this concept literally. Simple understanding of numerator and denominator, numerator comes from parent, so the value of denominator is greater than that of numerator. If it is very small, it is not a real mother-child relationship, called a fake score. Mother is great, so she holds the child high. Fractional line is a sign that numerator and denominator are separated, and it is a process that denominator operates according to the fraction of numerator. Love is double, so it is a division operation. 1 Divide the unit "1" or the whole "1" into several parts on average, and the number representing such one or several parts is called a fraction. The denominator is to divide an object into several parts, and the numerator is to take several parts. The horizontal line in the middle of the score is called fractional line, the number above the fractional line is called numerator, and the number below the fractional line is called denominator. Fraction can be expressed as a division formula, in which numerator equals dividend, fractional line equals divisor, denominator equals divisor, and fractional value equals quotient.