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Grade
2
Domain
Operations and Algebraic Thinking
Cluster
Add and subtract within 20.
2.OA.B. Add and subtract within 20.
2.OA.B.2. Fluently add and subtract within 20 using mental strategies.
See standard 1.OA.6 for a list of mental strategies.
By end of Grade 2, know from memory all sums of two one-digit numbers.
Building toward fluency
Hitting The Target Number
