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Teacher Notes (not visible to students)

Task Description: The purpose of this task is to support students in developing an understanding of a place value strategy for adding numbers. The goal is not for students to use the strategy to solve, but to understand the strategy. By using a representation to visualize the abstract notation, students will make sense of the strategy, adding tens with tens and ones with ones. The task may also support students in MP3, construct viable arguments and critique the reasoning of others and MP6, attend to precision.