Question: how do you write 12 billion in scientific notation?
Answer: 12,000,000,000. And this is how you would write 12 billion with letters only: Twelve billion. If you take apart 12 billion and turn it into millions you get: 12 billion = 12,000 million. If you type in 12 billion on your calculator, it may come out as a scientific notation of: 1.20E+10 (1.20 x 1010)