The number 700 million can be written out in its longer form of 700,000,000.We know that a number in standard form is written in the form of a x 10n, where a is a number greater than or equal to 1, and less than 10. n can be any whole number.The amount of 0's to the right of the 7 indicate how many times 7 has been multiplied by 10 to get 700 million.Hence the standard form is 7 x 108.