Negative Number: When we put a minus sign (-) before any number, the number obtained is less than zero. It is called a negative number. For examples, -1, -2, -3,... are negative numbers.

Positive Numbers: The numbers above zero and on the right are called positive numbers. For examples, +1, +2, +3,... are positive numbers.

Negative number:

• When we put a minus sign (-) before any number, the number obtained is less than zero. It is called a negative number.
• The numbers below zero are negative numbers -1, -2, -3,...

Positive Number:

• The numbers above zero and on the right are called positive numbers.
• They can be written as 1, 2, 3,... and also +1, +2, +3,...

For example, The height of a place above sea level is denoted by a positive number. Height becomes lesser and lesser as we go lower and lower. Thus, below the surface of the sea level, we can denote the height by a negative number.

If earnings are represented by ‘+’ sign, then the spendings may be shown by a‘–’ sign.

Similarly, temperature above 0°C is denoted a ‘+’ sign, and temperature below 0°C is denoted by ‘–’ sign. For example, the temperature of a place10° below 0°C is written as –10°C.