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Subtraction Word Problems

Solving word problems by subtracting 4 digit numbers with regrouping.

Mapped to CCSS Section# 3.NBT.A.2, 8.EE.C.8a

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.,Understand that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously.
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