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Mathematics » Kindergarten » Operations & Algebraic Thinking

Standards in this domain:

• CCSS.Math.Content.K.OA.A.1
• CCSS.Math.Content.K.OA.A.2
• CCSS.Math.Content.K.OA.A.3
• CCSS.Math.Content.K.OA.A.4
• CCSS.Math.Content.K.OA.A.5

Understand addition, and understand subtraction.

• CCSS.Math.Content.K.OA.A.1 Represent addition and subtraction with objects, fingers, mental images, drawings¹, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
• CCSS.Math.Content.K.OA.A.2 Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
• CCSS.Math.Content.K.OA.A.3 Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
• CCSS.Math.Content.K.OA.A.4 For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.
• CCSS.Math.Content.K.OA.A.5 Fluently add and subtract within 5.