Answer:
10
Step-by-step explanation:
It is best to use mental math with some equations (5x5 or something that is easy enough that work does not have to be shown 10 dived by 5
I don’t really know what your asking but anything multiplied by 0.5 or .5 is going to be half of that number
Example 2•.5=1
I don’t know if this is what you were asking, but I hope this helps