Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form.
what is the standard form of 13.088?
It is already in standard form.
It is already in standard form.
That IS the standard form.
It is already in standard form.
The ISBN of Skreemer is 1-56389-925-6.
The ISBN of Deadenders is 1-56389-706-7.
The ISBN of Promethea is 1-56389-655-9.
The ISBN of Change or Die is 1-56389-534-X.
The ISBN of Nevada - comics - is 1-56389-518-8.
The ISBN of Crimson - Wildstorm - is 1-56389-768-7.
The ISBN of The Books of Magic is 1-56389-619-2.
The ISBN of The Dreaming - comics - is 1-56389-493-9.
The ISBN of Planetary - comics - is 1-56389-648-6.
The ISBN of Steampunk - comics - is 978-1-56389-762-7.
It is already in standard form.
9,670 is the standard form.