1. Compare the size of the minuend and the minuend to determine the difference between them. If the minuend is less than the minuend, you need to borrow money.

2. Subtract from the minuend bit by bit, and take out the numbers on each bit (subscript 0), 10 (subscript 1) and 100 (subscript 2) in turn. If the number on this bit is less than the subtraction, you need to borrow.

3. If it is borrowed, subtract 1 from the high position and add 10 to the current position. Then calculate abdication subtraction.

4. If borrowing is not needed, directly subtract the minuend from the minuend to get the difference of the current bit.

5. Write down the difference in the corresponding position and continue to calculate the next digit.

6. The final result may have leading zeros (that is, high-order zeros) and need to be zeroed.

It should be pointed out that:

In the subtraction calculation of abdication, if there is a borrow or leading zero, it needs to be adjusted and recalculated in time. At the same time, in order to avoid mistakes, it is necessary to check and verify after calculation.

Subordinate subtraction is a mathematical operation method based on decimal system, which is mainly used to solve the subtraction between two multi-digit numbers. Compared with the traditional vertical subtraction, abdication subtraction has the characteristics of simple operation and fast calculation, and is widely used in daily life and work.

The abdication subtraction is an algorithm proposed to facilitate the calculation of a large number of numbers, which can greatly shorten the calculation time and improve the calculation efficiency. The abdication subtraction method is especially suitable for practical problems involving multiple digits, such as bank accounts MINUS expenses.

At the same time, it is necessary to pay attention to the handling of borrowing and carrying in the calculation of abdication subtraction, which may require constant practice for beginners to master. But once mastered, using abdication subtraction for mathematical calculation can be more accurate and efficient, bringing convenience to daily life and work.

In a word, abdication subtraction is a simple and efficient decimal subtraction, which can accurately solve the difference between multiple digits. In practical application, it needs to be applied flexibly according to the specific situation to avoid mistakes.