Think-board

This is my think-board that I have done and the strategy that I used is partitioning. I have done all four of them and have did my word story problem. The word story problem has gold as a example.

ThinkBoard

Thinkboard Master

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This is my thinkboard Master that I have done I have done all 

four of the things that I need on the thinkboard. The question that

I have to solve is  12x - 70 x=15.