Vertical calculation process of divided column

There is a ballad about the vertical calculation method of division:

One by one,? One is not enough to see two. ? Except to which businessman, who? Which is zero? Not enough space? ? Compare after each division. The remainder is less than the divisor.

Examples are as follows:

Take 492÷4= 123 as an example.

The specific calculation steps of the vertical direction are shown in the figure below.

Thinking of solving problems: Starting from the highest bit of 4, the quotient of 4 divided by 4 is 1, and then the second quotient of 2 divided by 9 is 1. Finally, the last bit of 2 and the remainder array of 1 obtained in the previous step are combined into a number 12, which is divided by 4, and the quotient is 3, and finally the result of 492÷4 is obtained.

Extended data:

Vertical type means that each transition number is changed by the last transition number, and then the single digits of the last transition number are multiplied by 2. If carry is needed, proceed to 1, then increase the unit number by ten digits, and so on, and add a new operand to the unit number. Mathematics is an applied subject, the purpose of which is to make calculation simple.

References:

Baidu encyclopedia? vertical