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Q: What is the number half a billion?
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What number is half of a billion?

500 million


What is the number 500000000 written in words?

Half a billion.


How do you write twenty eight and a half billion?

As a number it is: 28,500,000,000


What is half of 2 billion?

1 billion is half of 2 billion.


What is half of 6.5 billion?

Half of 6.5 billion is 3,250,000,000 (3.25 billion).


Assume that the age of the Earth is 4.6 billion years. How many half-lives of Rubidium-87 does the age of the Earth represent?

The half-life of Rubidium-87 is about 48.8 billion years. To determine the number of half-lives in 4.6 billion years, you divide the age of the Earth by the half-life of Rubidium-87: 4.6 billion years / 48.8 billion years ≈ 0.0943 half-lives. Thus, the age of the Earth represents approximately 0.09 half-lives of Rubidium-87.


Write number five and half billion with digits instead of words?

5,500,000,000


Half of a billion?

Half of an American billion is 500,000,000 (500 million). Half of a British billion is 500,000,000,000 (500 thousand million).


What does the word half-billion mean?

funny enough, half a billion


How do you write 1 and one half billion?

1 and one half billion can be written as 1.5 billion.


If a radioactive isotope had a half - life of 1 billion years how much of it would be left after 2 billion years?

1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.


What is half of one billion?

500 Million (500,000,000) is half of one billion.