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Common Core Standards

Add & Subtract Within 20

Grade: 2nd Grade
Standard:

Math.2.OA.2 or 2.OA.B.2

Description:

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

2nd Grade Math - Add & Subtract Within 20 Lesson
 
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