care to explain how u get 3 when you add 1 and 1?

i was taught in school 1+1 = 2...
if i put 3 then it's wrong...

try teaching ur younger relatives 1+1=3...
and see how they fare in maths...

please define streetwise and smartness..

In a streetwise environment, 1+1 can be a 3, the 1, the plus and
the 1 again all together is 3.
To be streetwise and smartness, u need to be born and
nurtured on street since young, streetwise peoples are people
who roam the street day in and out, they knew that without the
smartness, they cannot get rich in the society base on
education. Therefore in order to outsmart the people, they must be
daring with good acting skill and know the flaws in human egotism
and pride. The basic instinct of understanding body language and
the ability to sense his/her fellow humans thinking and
pre-action plan is a major key to be a streetsmart gal like me.
Streetsmart and wise are flexible people who get mature faster
than their same age group and understand the rules of human
games.