## Elementary Technical Mathematics

$5.854$
Perform the subtraction first, then addition next. Subtract the first two numbers vertically. Make sure that the numbers are aligned according to place value (write $12.1$ as $12.10$). Refer to the attached image below for the actual subtraction. The difference is $5.85$. Add $0.004$ to $5.85$ (write $5.85$ as $5.850$) to obtain : \begin{array}{ccc} &&5.850 \\&+ &\underline{0.004} \\&&5.854 \end{array}