Obliczenia dla okrągłych pól:
[tex]3,6:(-0,2)=36:(-2)=-18[/tex]
[tex]-18\cdot\dfrac{2}{9}=-\dfrac{\not\!\!18^{2}\cdot2}{\not9}=-2\cdot2=-4[/tex]
[tex]-4+3,5=-(4-3,5)=-0,5[/tex]
[tex]-0,5-(-1\dfrac{1}{4})=-0,5+1,25=1,25-0,5=0,75[/tex]
[tex]0,75\cdot(-3\dfrac{1}{3})=\dfrac{3}{4}\cdot(-\dfrac{10}{3})=-\dfrac{\not3\ \cdot\not\!\!10^{5}}{\not4_{2}\ \cdot\not3}=-\dfrac{5}{2}=-2\dfrac{1}{2}=-2,5[/tex]
[tex]-\dfrac{5}{2}:(-\dfrac{5}{6})=\dfrac{5}{2}\cdot\dfrac{6}{5}=\dfrac{\not5\cdot6}{2\ \cdot\not5}=\dfrac{6}{2}=3[/tex]
[tex]3-3,25=-(3,25-3)=-0,25[/tex]
[tex]-0,25\cdot0,8=-\dfrac{1}{4}\cdot\dfrac{8}{10}=-\dfrac{1\ \cdot\not4}{\not4\cdot5}=-\dfrac{1}{5}=-\dfrac{2}{10}=-0,2[/tex]
[tex]-\dfrac{1}{5}\cdot(-\dfrac{5}{4})=\dfrac{1\ \cdot\not5}{\not5\cdot4}=\dfrac{1}{4}=\dfrac{25}{100}=0,25[/tex]
Obliczenia dla kwadratowych pól:
[tex]3,6-\dfrac{1}{4}=3,6-0,25=3,35[/tex]
[tex]0,25-(-18)=0,25+18=18,25[/tex]
[tex]-0,5-(-18)=-0,5+18=18-0,5=17,5[/tex]
[tex]-2,5:(-0,5)=-25:(-5)=25:5=5[/tex]
[tex]-2,5:(-0,25)=2,5:0,25=250:25=10[/tex]
[tex]0,25-(-0,25)=0,25+0,25=0,5[/tex]
Uzupełniony graf w załączniku.
