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Student: I put 5 on the side and 10 + 9 on the top. Then I used the box method and got 95. Teacher: Why

Student: I put 5 on the side and 10 + 9 on the top. Then I used the box method and got 95. Teacher: Why does it work to use 10 + 9? Student: Because the original problem was 5 x 19 so I split 19 into 10 + 9. Talk move used

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