Picture addition
The question
+ =
6 + 3
How it works.
••••••+•••
hold:6count on:3
••••••+•••
6 + 3 =9
- 01
You could count them all from 1, but there is a quicker way.
- 02
Hold 6 in your head and count the other 3 on from there, instead of going back to 1.
- 03
6, then 7, 8, 9 — 9.