Question

What is 7 billion in standard form?

Answer 1

7 billion is standard form is "Seven Billion"

Answer 2

If by standard from you mean numbers (123) and not words then

1 milllion=1000 thousand or 1000*1000 or 1,000,000
1 billion=1000 million=1000*1000*1000=1,000,000,000
so 7billion=7*1000*1000*1000=7,000,000,000