Odpowiedź:
poziom A
a) [tex]\frac{3}{8} +5\frac{2}{8} =5\frac{5}{8}[/tex]
b) [tex]2\frac{4}{9} -\frac{2}{9} =2\frac{2}{9}[/tex]
c) [tex]4\frac{3}{7} +\frac{3}{7} =4\frac{6}{7}[/tex]
d) [tex]6\frac{5}{9} -\frac{1}{9} =6\frac{4}{9}[/tex]
e) [tex]\frac{1}{5} +3\frac{1}{5} =3\frac{2}{5}[/tex]
f) [tex]8\frac{6}{11} -\frac{4}{11} =8\frac{2}{11}[/tex]
poziom B
a) [tex]\frac{7}{9} -\frac{1}{9} =\frac{6}{9}[/tex]
b) [tex]\frac{5}{8} +\frac{3}{8} =\frac{8}{8} =8[/tex]
c) [tex]\frac{7}{12} +\frac{8}{12} =\frac{15}{12} =1\frac{3}{12}[/tex]
d) [tex]\frac{5}{8} -\frac{1}{8} =\frac{4}{8} =\frac{1}{2}[/tex]
e) [tex]\frac{4}{9} +\frac{8}{9} =\frac{12}{9} =1\frac{3}{9} =1\frac{1}{3}[/tex]
f) [tex]\frac{11}{15} +\frac{7}{15} =\frac{18}{15} =1\frac{3}{15} =1\frac{1}{5}[/tex]
Szczegółowe wyjaśnienie:
