1.31 billion in numbers

Answer 1

Answer: 1,310,000,000

Proof:

1 billion = 10^9 = 1,000,000,000

.31 billion = .31 * 1,000,000,000 = 310,000,000

1,000,000,000 + 310,000,000 = 1,310,000,000

2nd Answer: (by: Cigmorfil <-- please post your answers after the original post, rather than replacing it. Thank you.)

A billion is a bi-million (ie a two-fold million):

• In those countries that use the long scale (based on powers of a million) like Europe:

1.31 billion = 1.31 x (106)2

= 1.31 x 1012

= 1,310,000,000,000

• In those countries that use the short scale (based on powers of a thousand plus one) like USA:

1.31 billion = 1.31 x (103)2+1

= 1.31 x 109

= 1,310,000,000