Common Core · Mathematics
1.OA.8
Grade 1 · Operations & Algebraic Thinking
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.
- Official code
- CCSS.MATH.CONTENT.1.OA.8
- Short code
- 1.OA.8
- 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.2
Solve word problems that call for addition of three whole numbers whose sum is less...
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...
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