Does 100 billion equal to 100000 times 1 million?

Answer 1

Yes, assuming American usage where billion = 10^9 = thousand million

10^11 = 10^5 * 10^6

In British usage, however, billion equals million million = 10^12 = thousand milliard.

____________________________________ 100 billion = 100 x 10E12 = 10E14 (per SI unit definition) 100000 million = 10E5 x 10E06 = 10E11 Accordingly, they are not equal

Answer 2

Yes, it is. In the US as well as the British system.

According to a reply given to the British Parliament by in 1974 (yes, a few years ago!), the British adopted the system according to which 1 billion = 1000 million. In the United Kingdom, use of a billion to mean one million million is more rare than hen's teeth!

The relevant extract follows:

The Prime Minister: No. The word “billion” is now used internationally to mean 1,000 million and it would be confusing if British Ministers were to use it in any other sense. I accept that it could still be interpreted in this country as 1 million million and I shall ask my colleagues to ensure that, if they do use it, there should be no ambiguity as to its meaning. (HC Deb 20.12.1974 c711-2W).