How do you simplify $(2.548times10^5)/(2.8times10^-2)$ ?

Question

1363 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-28T20:04:38

Shown with a lot of detail and trying not to use a calculator.

$9.1xx10^6$

Note that $1/(10^(-2)$ is the same as $10^2$

So now we have:

$2.548/2.8xx10^5xx10^2" "=" "2.548/2.8xx10^7$

Do not like decimals so lets get rid of them. For the moment disregard the $10^7$

$color(green)(2.548/2.8color(red)(xx1)" "->" "2.548/2.8color(red)(xx1000/1000)" "=" "2548/2800)$

Putting it all together we have:

$2548/2800xx10^7$

$91/100xx10^7$

$9.1/10xx10^7$

$9.1xx10^7/10$

$9.1xx10^6$

How do you simplify (2.548times10^5)/(2.8times10^-2)(2.548times10^5)/(2.8times10^-2)?