Let's solve the given sum step-by-step:
We start with the given numbers: [tex]\( 11 \)[/tex], [tex]\( 1 \)[/tex], [tex]\( 0.01 \)[/tex], [tex]\( 0.11 \)[/tex], and [tex]\( 0.111 \)[/tex].
1. Step 1: Add the first two whole numbers:
[tex]\[ 11 + 1 = 12 \][/tex]
2. Step 2: Add the next decimal number to the result from Step 1:
[tex]\[ 12 + 0.01 = 12.01 \][/tex]
3. Step 3: Add the next decimal number to the result from Step 2:
[tex]\[ 12.01 + 0.11 = 12.12 \][/tex]
4. Step 4: Finally, add the last decimal number to the result from Step 3:
[tex]\[ 12.12 + 0.111 = 12.231 \][/tex]
So, the sum of [tex]\( 11 + 1 + 0.01 + 0.11 + 0.111 \)[/tex] equals [tex]\( 12.231 \)[/tex].
The correct answer is:
D. 12.231
