The so-called ladder equation, that is, aliasing calculation, is a mathematical term, which is an operation that completely writes out the calculation process, that is, a calculation that deviates from the vertical.

For example:

(35+28)÷9× 1 1

=63÷9× 1 1

=7× 1 1

=77

How to calculate the distortion?

The main thing to master is to remember to calculate multiplication and division first, and then add and subtract.

In the successive calculation of multiplication and division, it should be calculated from left to right.

When you encounter parentheses, you must first calculate the inside of parentheses.

In the process of demoulding, the operation sequence line should be drawn according to the operation sequence, and the "three checks" should be achieved:

First, check whether the numbers and symbols copied from books to exercise books are correct.

Second, check whether the numbers and symbols copied from horizontal to vertical are copied correctly.

Third, check whether the draft is copied correctly in the vertical direction, in the horizontal direction, and whether the decimal point is missing or correct.

This is one of the important methods of mathematical calculation, so we should grasp it firmly ~