CCSS.Math.Content.1.OA.A.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

2016年5月4日 · 1.OA.A.1. 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. See Glossary, Table 1.

Download and print 1.OA.A.1 worksheets to help kids develop this key first grade Common Core math skill.

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 …

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 …

Check out our 1.OA.A.1 lesson plans designed to help kids develop this key first grade Common Core math skill.

Common core worksheets and activities for 1.OA.1 / Operations And Algebraic Thinking / Represent And Solve Problems Involving Addition And Subtraction.

1.oa.a.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

1.OA.1 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. comparing, with unknowns in all positions.

First grade math operations and algebraic thinking focus on building a strong foundation in basic arithmetic and understanding simple mathematical relationships. Students learn to solve addition and subtraction problems within 20, develop strategies for addition and subtraction, and understand the concepts of "putting together" and "taking apart."