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1,000,000,000 or without the commas.

A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. Adding zeros after the decimal point is wrong because they imply a degree of accuracy (significant figures) for which there is no justification.

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8y ago
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Q: How do you write 1 billion as a decimal?
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