How do you write #87000# in scientific notation?
When using scientific notation we want to keep the all the non-zero numbers that come before the string of zeroes, which are 8 and 7.
The decimal goes between the 8 and 7:
To get back to the original number we have to multiply 8.7 by 1000
or in other terms:
We have the number,
In scientific notation, we would write the number with its first digit followed by a decimal point, and then the second digit of the number, and then multiplied by
And so, to write the number
The number is
Now, we place the second digit in the number
Final step is to multiply the number by
And so, the scientific notation of this number would be