1st Grade 1.OA.A.2 Math Operations Algebraic Thinking Printable Worksheet PDF. Common Core State Standard 1.OA.A.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20.
1st Grade 1.OA.A.2 Math Operations Algebraic Thinking Printable Worksheet PDF. Common Core State Standard 1.OA.A.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20.