The analysis process is as follows:

Such as: 10-5, where "-"is called the minus sign.

10 precedes the minus sign, so 10 is the minuend.

5 is after the minus sign, so 5 is subtraction.

Extended data:

Algorithm of integer addition and subtraction:

(1) Same-digit alignment;

(2) from the unit;

(3) When it is added to dozens, it will be pushed to a higher position; If the subtraction is not enough, subtract 1 from the high position. When this number is added to 10, it will decrease.

The subtraction calculation method of primary school: the method of breaking ten.

Decimal method: a calculation method, that is, when the unit is not reduced enough, subtract the subtraction with 10 and add the remainder to the unit, that is, decimal method.

Break the ten-law formula

A dozen MINUS nine, a few plus one; Ten MINUS seven, a few plus three; A dozen MINUS five, a few plus five; One dozen MINUS three, several plus seven; A dozen MINUS eight, a few plus two; A dozen MINUS six, a few plus four; A dozen MINUS four, a few plus six; A dozen MINUS two, a few plus eight.