SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Write the given decimals
[tex]8.999+5.496+1.199[/tex]STEP 2: Round the given decimals
[tex]\begin{gathered} 8.999\approx9 \\ 5.496\approx5 \\ 1.199\approx1 \end{gathered}[/tex]STEP 3: Find the sum
[tex]9+5+1=15[/tex]Hence, the sum is estimatedly 15