Instead of giving you the problem and asking you for the solution, on this site you give the problem and it gives the solution. Solve math problems by filling in online forms. Answer given with short explanation. Main categories- math for everyone, general math, K-8 math, algebra, geometry, trig & calc. Subcategories- figuring a tip, sale price, wind chill, count coins, lottery odds, simple interest, compound interest, decimals and fractions, scientific notation, place value, number line, proportions, etc.