524÷4=(400+120+4)÷4 =400÷4+120÷4+4÷4 =100+30+1 =131. The vertical expression in mathematics refers to a vertical expression in the calculation process to make the calculation easier.

The vertical form of 524÷4

The concept of vertical form

The vertical form refers to a vertical calculation in the calculation process to make the calculation easier. During addition, the same digits are aligned, and if the sum exceeds 10, it is advanced by 1. When calculating subtraction, the same digits are aligned. If there is not enough to subtract, borrow 1 from the previous digit and make it 10.

　Out-of-form calculation

The off-form calculation is also the recursive calculation. The operation that writes out the calculation process completely is called the calculation out of the vertical form. When calculating mixed operations, one usually calculates one equation in one step (calculate step by step, the equal sign cannot be written on the original equation), and write down the process of each step. Generally speaking, the equal sign should be moved forward and not aligned with the first line, which means it leaves the original calculation.