Because numbers less than 0 are called negative numbers, negative numbers and positive numbers represent quantities with opposite meanings. Negative numbers are marked with a negative sign (that is, equivalent to a negative sign) "-"and a positive number, such as? 2 stands for the antonym of 2.

Therefore, any positive number preceded by a negative sign becomes a negative number. A negative number is the reciprocal of its absolute value. On the number axis, negative numbers are all on the left of 0, and the two negative numbers are larger, but the larger absolute value is smaller.

Extended data:

computation rule

1、+

Negative number 1+ negative number 2=- (negative number 1+ negative number 2)= negative number

Negative number+positive number = the sign takes the sign of the addend with larger absolute value, and the numerical value takes the addend with larger absolute value minus the addend with smaller absolute value.

2、-

Negative number 1- negative number 2= negative number 1+ (negative number 2)= negative number 1 plus the reciprocal of negative number 2, and then use negative number plus positive number to calculate.

Negative number-positive number =-(positive number+negative number) = negative number The subtraction of two numbers with different signs is equal to the sum of their absolute values.

3、×

Negative number 1× negative number 2= (negative number 1× negative number 2) = positive number

Negative x positive =-(positive x negative) = negative.

4、÷

Negative 1÷ negative 2= (negative 1÷ negative 2) = positive.

Negative/positive number =-(negative/positive number) = negative number

Generally speaking, dividing by the same symbol equals a positive number, and dividing by different symbols equals a negative number.

Baidu encyclopedia-negative number