Quote:
Originally Posted by ottopottomouse
Looks like addition for people who have to count on their fingers.
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I graduated from high school with AP Calculus and I use this method of "counting" which isn't really "counting", its more of number grouping. Although I was not taught in school to "count" this way, I've been doing this for as long as I can remember. It is faster processing than "carry the x" which when you have multiple levels of adding can get lost.
The picture shows 1 step on the left, when it should show all the steps you're actually taking like the pic on the right does. Then it might be compared properly.