Suppose my weight 1 year ago was 95 kg
My weight now is 100 kg
So, I have increased 5 kg
But
If my weight becomes 85 kg
Then, I have reduced 10 kg
But these 5 kg & 10 kg aren’t the same
One is positive, + 5 kg
Other is negative , −10 kg
Similarly
If we deposit 200 rupees to the bank
It is positive,
+200
If we withdraw 500 rupees from the bank,
It is negative −500
Similarly
Plane is 5000 m above sea level .
It is positive, + 5000 m
Submarine is 1200 m below sea level .
It is negative , −1 2 00 m.
Therefore ,
Just like positive numbers : 1, 2, 3, 4, 5, …...
We have negative numbers : −1, −2, −3, −4, −5, …….
What about 0?
0 is neither positive, nor negative.
