That is going to be 48 for the first question because 6x8 equals 48
It only has two number sentences because 81 divided by anything else wont work only 9 would. Also since 9 times 9 is equal to 81
The answer is C
10% = 0.10
12 x 0.10 = 1.20
12 - 1.20 = 10.80