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

1 negative numbers.jpg

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.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo