scientific notation

User Generated

Puevf8213

Mathematics

Description

there are 2x10^7 people who live in NY state and 5x10^5 of those people live in Staten Island .How many times bigger is the population of NY state than the population of Staten Island

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Explanation & Answer

Divide the number of people who live in NY Sate by the number of people who live in Staten Island:

2x10^7 / 5x10^5 = 0.4x10^2   BUT in scientific notation we always have a one digit number followed by a decimal point.

So, we change 0.4x10^2  to  4.0x10^1 which equals 4x10 = 40

So, the population NY State is 40 times bigger than the population of Staten Island.


Anonymous
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