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.

Add using Pictures within 10

Practice Now i

Add using Pictures within 20

Practice Now i

Subtract using Pictures

Practice Now i

Addition Word Problems

Practice Now i

Subtract to Compare

Practice Now i

Subtraction Word Problems

Practice Now i