$a)$

$3^3=3\cdot 3\cdot 3=27$

$0^{250}=0$

${11}^2=11\cdot 11=121$

${\left(\frac{1}{2}\right)}^4=\frac{1}{2}\cdot \frac{1}{2}\cdot \frac{1}{2}\cdot \frac{1}{2}=\frac{1}{16}$

${\left(-2\frac{1}{4}\right)}^2={\left(-\frac{9}{4}\right)}^2=\left(-\frac{9}{4}\right)\cdot \left(-\frac{9}{4}\right)=\frac{81}{16}=5\frac{1}{16}$

${\left(-0,6\right)}^3=\left(-0,6\right)\cdot \left(-0,6\right)\cdot \left(-0,6\right)=-0,216$

 

$b)$

${\left(-2\right)}^3=\left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)=-8$

${\left(-0,2\right)}^3=\left(-0,2\right)\cdot \left(-0,2\right)\cdot \left(-0,2\right)=-0,008$

${12}^2=12\cdot 12=144$

${\left(-\frac{1}{3}\right)}^2=\left(-\frac{1}{3}\right)\cdot \left(-\frac{1}{3}\right)=\frac{1}{9}$

${\left(-1\frac{1}{2}\right)}^3={\left(-\frac{3}{2}\right)}^3=\left(-\frac{3}{2}\right)\cdot \left(-\frac{3}{2}\right)\cdot \left(-\frac{3}{2}\right)=-\frac{27}{8}=-3\frac{3}{8}$

${\left(0,2\right)}^5=0,2\cdot 0,2\cdot 0,2\cdot 0,2\cdot 0,2=0,00032$

 

$c)$

${\left(0,3\right)}^3=0,3\cdot 0,3=0,09$

${\left(-0,1\right)}^6=\left(-0,1\right)\cdot \left(-0,1\right)\cdot \left(-0,1\right)\cdot \left(-0,1\right)\cdot \left(-0,1\right)\cdot \left(-0,1\right)=0,000001$

${13}^2=13\cdot 13=169$

${\left(\frac{3}{4}\right)}^3=\frac{3}{4}\cdot \frac{3}{4}\cdot \frac{3}{4}=\frac{27}{64}$

${\left(3\frac{1}{3}\right)}^0=1$

${\left(1,3\right)}^2=1,3\cdot 1,3=1,69$