How do you write $18times10^3$ in scientific notation?

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Answer 1 · 2016-06-21T06:31:29

$18xx10^3=1.8xx10^4$

In scientific notation, we write a number so that it has single digit to the left of decimal sign and is multiplied by an integer power of $10$ .

In other words, it is written as $axx10^n$ , where $1<=a<10$ and $n$ is an integer.

Now in $18xx10^3$ , we have $18$ which is greater than $10$ . Hence, we should reduce it to $1.8$ . As such

$18xx10^3=1.8xx10xx10^3=1.8xx10^4$

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