500 million
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1 and one half billion can be written as 1.5 billion.
half of 1 billion is five hundred million. 1 billion halfs would be five hundred million. n / 2 = 1 billion, n = 2 billion
Half of 2 billion is 1 billion. To find half of a number, you divide it by 2. In this case, dividing 2 billion by 2 gives you 1 billion. This is because half of any number is equal to dividing that number by 2.
It is: 500,000,000
Half of 6.5 billion is 3,250,000,000 (3.25 billion).