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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.

# Scientific Notation

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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