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A scientist estimated that there are five hundred twenty billion grains of sand on a beach. How is that number written in scientific notation?
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A scientist estimated that there are five hundred twenty billion grains of sand on a beach. How is that number written in scientific notation?

User Jslopez
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5.2 * 10^11 5.2 moved over 11 digits is 520 billion
User MoDFoX
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