What's the difference between a rhombus and a square? Can you divide 456138 by 9? Equations, symbols, formulas: math may give you a headache, but it's crucial to success in school and business. This engaging and entertaining guide makes things easier with 101 facts that help with everything from pie charts to timesaving tricks for problem solving. With these step-by-step explanations, math could become as simple as 1 + 1 = 2