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A teacher counts the number of books on her bookshelf. She finds that she has a total of 270 books. As she sorts through the books, she decides to give 54 books to the library. How many books does the teacher have left?
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The teacher has 270 books and she's taking away 54 books. Taking away is subtracting. You need to subtract 54 from 270 270 - 54
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