SACRAMENTO, - People in the Sacramento area might be pardoned for asking if the folks who publish their schools' error-filled math books are smarter than a fifth-grader. The Sacramento Bee reported Thursday the new Macmillan/McGraw-Hill math books distributed to second-graders at 79 city-area elementary schools in the Sacramento City and Folsom Cordova districts include the equation: five times three equals five. It's not an isolated faux pas, either. Folsom Cordova District Assistant Superintendent Janie DeArcos says fourth-graders have found 90 mistakes in their textbook and related materials, the newspaper said. State officials say the publisher is responsible for correcting errors,...