Answer:
1.2
Explanation:
How I would calculate it would be 10.80 divided by 9 or start timesing 1 with a decimal like 1.1 or 1.2.
but anyway 10.80 divided by 9=1.2 and if you just want to make sure then what is 1.2 x 9 it = 10.80
Here is my calculations for what is 1.20 x 9
1 . 20
9
_________
10 . 8 0
Since there is no didget beside the 2 you would add a zero
since 9 x 2=18 you add a 1 for 1 x 9 =9 + 1=10 and there's your answer.
Answer=1.2
Hope this helps have a great day:)