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Title: Half the answers in this math book are incorrect.
Review: As a math books go this is at the bottom of the barrel. The author was never taught that math operations are to be done in a particular order. Consequently many of the problems do not arrive at their intended target "answer". PEMDAS (Please excuse my dear Aunt Sally) is a good way to remember what is done first. Parentheses, exponents, multiplication, division, addition/subtraction.
