1000-96=904, checking calculation: 904+96= 1000.

The unit 0-6 is not enough. If you borrow one from ten, it becomes10-6 = 4 (the two numbers10 are regarded as single digits).

Addition is the inverse of subtraction. Similarly, subtraction is the inverse of addition. We can check each other.

The vertical calculation is as follows:

Extended data

Subtraction by abdication, a special mathematical term, can also be called subtraction by borrowing. That is, when two numbers are subtracted and the number of digits to be subtracted is not enough, borrowing the previous digit is equivalent to adding 10 to this digit, and then calculating.

Subtraction is one of the four operations, and the operation of subtracting one number from another is called subtraction; Given the sum of two addends and one of them, the operation of finding the other addend is called subtraction. The symbol of subtraction is "-",which is pronounced as negative sign.

When subtraction is used, the minus sign "?" Between two projects. The result is represented by an equal sign.

In other cases, subtraction is "understandable", even if there is no sign: a column with two numbers, the smaller number is indicated in red, which usually means subtracting the smaller number in the column, and the difference is below one line. This is very common in accounting.

Formally, the reduced number is called subtraction, and the reduced number is reduced.

Natural number: the subtraction of natural number is not closed. It is closed unless the minuend is greater than the minuend. For example, 1 1 cannot subtract 26. In this case, use one of two methods:

(1) says that 26 cannot be subtracted from 1 1;

(2) If the answer is an integer, it means a negative number, so the result of 1 1 minus 26 is-15.

Real number: The subtraction of real numbers is defined by adding signed numbers. Specifically, one number subtracts the negative number of another number. And then we have three? π= 3 +(? π)。 This helps to avoid introducing "new" operators such as subtraction, thus maintaining the "simplicity" of real numbers.