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One billion is also written as 10^9,... One billion is equal to 1,000 million. One billion is written with a one followed by nine zeros, while one million is written with a one followed by six zeros. One billion is also written as 10^9, and one million is written as 10^6. Continue Reading
David M. Schwartz has written a delightful book called How much is a million?. You can find it in the public library, and I'm sure you would enjoy it. In his book, he says: How big is a billion? If a billion kids made a human tower, they would stand up past the moon. If you sat down to count from one to one billion, you would be counting for 95 years.