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Take Away Subtraction With Regrouping Base 10 Blocks - PowerPoint PPT Presentation


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Problem: 32 - 17. Build 32 on the top portion of the Subtraction Mat.How many tens? Record it.How many ones? Record it.How much is that?. . Write minus seventeen on the middle portion of the mat.. Is it possible to take away seven ones? (no)Exchange a ten for 10 ones and place them on the ones portion of the mat.Record the exchange..

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