First Method:
Round
to the closest integer, which is 1.
Round
to the closest integer, which is also 1.
So 1 + 1 = 2.
Answer for method 1: 2
Second Method:
+
= 
is around 1
Answer for method 2: 1
The closest answer is 1.
I'm sorry this is gauge is there anymore info
THE ANSER is commutative property of addition
X = 12 inches so D is correct