Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
Operations and Algebraic Thinking
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Fluently add and subtract within 5.
Decompose numbers less than or equal to 10 in more than one way.
For any number from 1 to 9, find the number that makes 10 when added to the given number.
Model situations that involve representing addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
Solve word problems using objects and drawings to find sums up to 10 and differences within 10.