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  Interactive: Notebook: Math Mats: Operations & Algebraic Thinking (Subtraction) - Summer Theme (grade 1)
Common Core Math Lessons for First Grade - Interactive SmartBoard Lessons - Math Mats for Summer - large image
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Seven colorful math pages for practice in subtraction within 20. May be used for student practice or to model use of corresponding Printable Math Mats. CC: Math: 1.OA.A.1-2, B.3-4, C.5-6, D.7-8

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