Curriculum>Grade 1> Module 2>Topic C: Varied Problems with Decompositions of Teen Numbers as 1 Ten and Some Ones
B. Complete equations that add or subtract all tens or all ones with and without a model of base-10 blocks
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With and without the use of base 10 number cubes, you will complete both addition and subtraction equations. When the base 10 number cubes are used, they will either be added or subtracted from the total before completing the subtraction equations
