Basically, addition means to add two or more items or numbers.
We will answer this question thru counting numbers starting from 1.
1, 2, 3, 4, 5, 6, 7, ...
The problem is the sum of 2 and 2.
Initially you 2 and you will add another 2, that's 2 + 2
First, counting from 1.
You need to count 2 times.
So, 1 then 2.
Next is to add two more counts since we are adding 2 from 2.
Starting now from 3, we have 3 then 4.
So to summarize, we have
1, 2, then 3 and 4
The answer is 4.