How do i write 900000000 in standard form?

To write 900,000,000 in standard form, you would express it as 9 x 10^8. In standard form, a number is written as a coefficient multiplied by 10 raised to a certain power. In this case, 900,000,000 can be simplified as 9 multiplied by 10 to the power of 8, where 8 represents the number of zeros in the original number.