0.000000005
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5 billionths = 0.000000005
To write 10 billionths in decimal form, you would start with the number 0.000000001. This is because a billionth is one divided by one billion, which is represented as 1/1,000,000,000 or 0.000000001 in decimal form.
Five hundred four thousand, three hundred twenty-seven and one million, five hundred ten thousand, five hundred twelve billionths.
To write 5 billionths as a decimal, you would start with the number 5, followed by nine zeros (since a billion has nine zeros), and then place the decimal point before the last digit. Therefore, 5 billionths as a decimal would be written as 0.000000005.
A billionth (0.000000001) represents the number one divided into one billion parts. 700 billionths can therefore be written as 0.000000700 or: 0.0000007