The mass of mars is about 6.421x10^20 metric tons. the mass of the sun is about 1.998x10^27 metric tons. about how many times the mass of mars is the mass of the sun? give your answer in scientific notation.

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?