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Grade
1
Domain
Operations and Algebraic Thinking
Cluster
Understand and apply properties of operations and the relationship between addition and subtraction.
Standard
Understand subtraction as an unknown-addend problem. <span class='clarification'>For example, subtract
10 - 8
by finding the number that makes 10 when added to 8.</span>
1.OA.B.4. Understand subtraction as an unknown-addend problem.
For example, subtract
10 - 8
by finding the number that makes 10 when added to 8.
Cave Game Subtraction
