This file contains 6 posters I displayed in my class when I taught 2nd, 3rd and 4th grades.
The posters illustrate the main mental math addition strategies children are likely to use when you are doing Number Talks with them. I've given each strategy a memorable name (explained in the file) with a visual. This always helped my classes remember and use the different strategies when they were solving addition problems mentally.
These posters use equations with addends within 100. I have also made posters for addition within 20 and posters with addends within 1000 (both of these sets are also FREE).
I hope you find these posters useful!