Question

Evaluate:

$\sqrt{\frac{1}{4}}+(0.01{)}^{\frac{1}{2}}\times (5)-(27{)}^{\frac{2}{3}}$ is $m$, then the value of $-m$ is:

Answer 1

$\sqrt{\frac{1}{4}}+(0.01{)}^{\frac{1}{2}}\times (5)-(27{)}^{\frac{2}{3}}$

$=\frac{1}{2}+0.1\times 5-(3^3{)}^{\frac{2}{3}}$

$=\frac{1}{2}+\frac{1}{10}\times 5-9$

$=\frac{1}{2}+\frac{1}{2}-9$

$=-8$

$\therefore m=-8\Rightarrow -m=8$