The Negative Numbers are real numbers which is less than zero. Zero is neither considered as positive nor negative. The negative numbers are represented with Minus symbol (-) is written in front of a number. Decimals, Fractions, Whole numbers can be in form of Negative numbers except zero, For example: -2, -5, -9, -0.5, -5.5, $-\frac {1}{2}$, $\frac{10}{-15}$ etc.

Negative Number Line :

Positive and Negative Number Line


The negative number with greater value is considered less value.
Below you could see some examples

Solved Examples

Question 1: The temperature in Switzerland has dropped from 20oC to -10oC. Calculate the overall change in temperature.
Solution:
Step 1 : 20 - (-10)

By using , $ -  - $ = $+$ (Minus * Minus = Plus)

Step 2 : We get, 20 + 10 = 30

Answer : +30

The temperature from 20oC degrees has fallen to 0oC and further below to -10oC.


Question 2: Subtract -32 from -23.
Solution:
Step 1: -23 -(-32)

Step 2: -23 + 32

Answer : +9