Question

2+1 what is the answer​

Answer 1

3

Explanation:

do I really need to explain?

Answer 2

3

Explanation:

2 cookies + 1 cookie = 3 cookies

2 represents unit 1 2 and 1 represents unit 1. 2 is worth twice of one and is regarded as 2 1s. so 2 + 1 = 1 + 1 + 1. Then 3 represents 3 ones. so 1 + 1 + 1 = 3 1s.