4.08÷8=0.54÷6=6.3÷ 14=? 72÷ 15= 14.2 1÷7=24÷ 15= 1.26÷ 18=

First, the divisor is the calculation rule of integer decimal division:

Dividers are fractional divisions of integers, which are divided according to the law of integer division. The decimal point of quotient should be aligned with the decimal point of dividend. If there is a remainder at the end of the dividend, add 0 after the remainder and continue the division.

Second, the divisor is the calculation rule of fractional division:

Divider is the division of decimals. First, move the decimal point of the divisor to make it an integer. The decimal point of the divisor is shifted to the right by several digits, and the decimal point of the dividend is also shifted to the right by several digits (the digits are not enough, and 0 is added at the end of the dividend), and then the calculation is carried out according to the fractional division in which the divisor is an integer.

Third, the discovery in fractional division:

1, when the divisor is greater than 1, the quotient is less than the dividend. For example, 3.5÷5=0.7.

2. When the divisor is less than 1, the quotient is greater than the dividend. For example, 3.5/0.5 = 7.

Calculation method of fractional division:

Quotient× Divider = Divider (General) ② Divider = Divider

Factor of quotient: according to the number of decimal places to be reserved, decide how many decimal places to divide by quotient, and then reserve a certain number of decimal places according to rounding method to find the divisor of quotient.