什么是负数？

代数是一门标准的数学学科，是关于数字和符号评估的研究。执行代数运算以确定表达式中由符号或字母表示的未知值。代数方程与变量、常数、因子和变量系数等项相关联。

数线

数轴是在等间隔放置的直线上的数字的数学表示。数字行中表示三种类型的数字。这些数字是正数、零和负数。

在数轴中，零位于中心，充当中性值。它既不是消极的也不是积极的。从零向左移动时，值开始减少，这些值称为负数。虽然从零向右移动，但值开始增加，这些值被称为正数。

1. Number without a minus sign is a positive number.
2. Number with a minus sign is a negative number.

什么是负数？

Negative numbers are basically defined as the numbers which are less than zero. Negative numbers are placed on the left side of the number line from zero. As we keep moving towards the left from zero in the number line the value of numbers decreases. These numbers are signified by the sign minus (-) which determines the value as negative.

Negative numbers can also be understood as the opposite value of positive numbers. The set of negative numbers counts from -1, -2, -3, -4, -5, … and so on.

示例问题

问题1：代数中使用的符号可以是负数吗？

回答：

Yes, the symbols used in algebra with negative signs are considered negative.

问题2：如果一个数字没有任何符号，它是什么类型的数字？

回答：

If a number has no sign attached to it, the number is said to be a positive number.

问题3：负数在哪里使用？

回答：

Negative numbers are mostly used in weather forecasting to define the temperature or humidity in the environment.

问题 4：如果一个 6 减去 8 会是什么结果？

回答：

If 6 is subtracted by 8 the result will be -2 which is a negative number.

6 – 8 = -2

问题5：9和6有什么区别？

回答：

The difference between 9 and 6 will be 3 which is a positive number.

9 – 6 = 3