Awesome Math: Problems for Creative Thinking, Grade 6

Fun math problems with well-explained answers. From the authors: "We wrote this book just for you. It's filled with our favorite problems. Some are hard. Others are really hard. Still others are really, really hard. . . What's great about these problems is that when you do them you get to use what you know about math in different ways. And doing them will help you learn lots more about math, too. . . Take this book along with you everywhere. this way you can do the problems while you're traveling, at recess, watching TV, eating lunch, under the covers, and over e-mail. You get the picture. Just do 'em!"