Answer
$\frac{10}{11}$
Work Step by Step
Starting with n=1, use n to compute the first term, then, continue to move on until you reach n=10. Then add up all the terms you get.
$\frac{1}{1}-\frac{1}{2}+\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+\frac{1}{5}-\frac{1}{6}+\frac{1}{6}-\frac{1}{7}+\frac{1}{7}-\frac{1}{8}+\frac{1}{8}-\frac{1}{9}+\frac{1}{9}-\frac{1}{10}+\frac{1}{10}-\frac{1}{11}$
$=1-\frac{1}{11}$
$=\frac{10}{11}$