How do you simplify #10^2 times 0.23#?
First of all, you should have the number that isn't a multiple of ten written first, like so:
Then, actually multiply to get a number.
Then, write the new equation with a number larger than 1, but less than 10, and multiply it by a multiple of ten
We use 10^1, as you need to multiply 2.3 by 10 to get 23