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SUPPORTS 1.OA.A.1: Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
SUPPORTS 3.NBT.A.2: Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
SUPPORTS 4.NBT.B.4: Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Explain a process or present information, ensuring items are clearly sequenced, relevant details are included and accounts ended effectively