Vacation BooksMath brain teasers require computations to solve.Morgan came home from her vacation at Grandma's with 6 books. While she was away she purchased 3 books at the book store and got 1 book as a gift. During her stay at Grandma's, she also gave her cousin the 2 books that she finished.
How many books did she take with her when she left for her trip? 
AnswerMorgan started with 4 books.This is one way to work backwards: Morgan returned with 6 books. She gave away 2 of the books that she had. So add those two books back to her total. 6 + 2 = 8 She had received 1 book that she had not brought with her. So subtract that book from her total. 8 - 1 = 7 She bought 3 books that she had not brought with her. So subtract those books from her total. 7 - 3 = 4 She must have left for vacation with 4 books. Hide What Next?
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