First Grade Common Core Math 1 OA.1 Use Addition and Subtraction To Solve Word Problems 1.OA.1 Practice provides two ways for students to practice and show mastery of their ability to use addition and subtraction within 20 to solve word problems.
It includes 40 distinct problems in two sets (129 slides in all!), with and without following answer slides. The PowerPoint file can be used on computers, or Promethean Activboard and Smart boards.
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Standard 1.OA.1 Represent and solve problems involving addition and subtraction.
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.