1.OA.2

Grade 1 · Operations & Algebraic Thinking

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.

Official code: CCSS.MATH.CONTENT.1.OA.2
Short code: 1.OA.2
Subject: Mathematics
Grade: Grade 1
Domain: Operations & Algebraic Thinking

More Grade 1 Operations & Algebraic Thinking standards

1.OA Operations and Algebraic Thinking 1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of... 1.OA.3 Apply properties of operations as strategies to add and subtract. 1.OA.4 Understand subtraction as an unknown-addend problem. 1.OA.5 Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). 1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within... 1.OA.7 Understand the meaning of the equal sign, and determine if equations involving... 1.OA.8 Determine the unknown whole number in an addition or subtraction equation relating...

Working on this standard at home? Get free at-home lessons from Resource Portal AI →