First Grade Math Lessons : First Grade Math Subtraction Tables

[jmhanner1]

If you make these into flash cards it works by covering up a corner and having them add or subtract. but they have to understand addition and subtraction before going to these

[herkryst]

its good trick.. thanks.. i'll teach this to my kids.. 

[threelittlepigswolf]

I Like this.

[hottyb13]

kind of complicated

[mohrhomeschool]

I color coded mine for my son; the "whole" number of the group at the top I made blue and the two "parts" numbers red which seemed to help him to better understand the triangle technique. I tried using the triangle for addition facts but it didn't make sense to him until after he memorized them. Hope this helps. :)

[reachsatish]

Hmm..seems complicated for kids learning subtraction for the first time

[pelu220]

@reachsatish Quite... but it kinda helped my son.