These Common Core Aligned, Operations and Algebraic Thinking Number Talks can be used flexibly as part of a math warm-up routine, daily review problem, OR a Number-talk lesson! Every problem is designed so that students can utilize their mental math and flexible thinking skills. Many students will find different ways to solve, while all getting the same answer! Simply use your projector or smart-board to project these problems, and record the different strategies your students utilize, as they s