Worksheets on Common Core Standard - 1.OA.A.1
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.1
(9 results)
Adding 3 Numbers with Word Problems
This worksheet is designed to reinforce the CCSS.MATH.CONTENT.1.OA.A.2 standard. Each problem is a d...
1.OA.A.21.OA.A.1
Addition Within 10
This 1st grade math worksheet provides practice using Operations and Algebraic Thinking strategies t...
1.OA.A.1
Adding 3 Numbers - Word Problems
These word problems focus on adding three 1-digit numbers. Illustrations that represent each proble...
1.OA.A.21.OA.A.1
Addition Word Problems
These addition word problems focus on adding three digits within ten. Illustrations to represent eac...
1.OA.A.21.OA.A.1
Word Problems — Subtraction
1.OA.A.1
Subtraction Within 10
1.OA.A.1
Subtraction Within 20
1.OA.A.1
Grade 1 Addition and Subtraction Word Problems Within 20
1.OA.A.1
Addition and Subtraction Within 20
1.OA.C.61.OA.B.31.OA.A.1