Grade 1 - Operations and Algebraic Thinking
Standard 1.OA.1 - Practice adding objects up to 10.
Included Skills: Addition
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.