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# Decimals

Coins are often used to express a fraction of a currency. In the US, a quarter is $0.25 and a dime is $0.10. Counting change is just one of many ways you can put decimals to use in everyday life.

Which of the following correctly expresses \( 3.102 \) in scientific notation?

Which of the following numbers is equal to \( 2 . 174 \times 10 ^ 6 \)?

Which of the following correctly expresses \( 0. 3 134 \) in scientific notation?

Which of the following numbers is equal to \( 2 . 204 \times 10 ^ {-2} \)?

Which of the following can **not** be a valid representation of \(464,700\) in scientific notation?

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