JavaScript Math Object Tutorial
include a decimal value in your numbers for better calculation and then click one of the Math Object methods
Math.ceil(a) - Returns the smallest integer greater than or equal to a
Math.floor(a) - Returns the greatest integer less than or equal to a
Math.round(a) - Returns the integer nearest to a
Math.sqrt(a) - Returns the square root of a
Math.random() - Returns a pseudo-random number in the range 0 to 0.999999999999
Math.min(a,b) - Returns the greater of a and b
Math.min(a,b) - Returns the lesser of a and b
Math.pow(a,b) - Returns a to the power of b