How do you write 910.5 in scientific notation?
Keep the decimal point where it is but slide the number to the right 2 places giving:
But this is a different value so we need to add a mathematical correction.
If we have:
Now we change the format to:
You must end up with only 1 digit to the left of the decimal point for it to be in scientific notation
Suppose we had:
Then this would be
Which ends up as: