Zadanie 1
a) [tex]2\frac{1}{3} + 1\frac{3}{5} = \frac{7}{3} + \frac{8}{5} = \frac{35}{15} + \frac{24}{15} = \frac{59}{15} = 3\frac{14}{15}[/tex]
b) [tex]3\frac{2}{6} - \frac{3}{4} = \frac{20}{6} - \frac{3}{4} = \frac{10}{3} - \frac{3}{4} = \frac{40}{12} - \frac{9}{12} = \frac{31}{12} = 2\frac{7}{12}[/tex]
c) [tex]2\frac{1}{5} * \frac{2}{3} = \frac{11}{5} * \frac{2}{3} = \frac{22}{15} = 1\frac{7}{15}[/tex]
d) [tex]1\frac{3}{5} : \frac{7}{5} = \frac{8}{5} * \frac{5}{7} = \frac{8}{7} = 1\frac{1}{7}[/tex]
Zadanie 2
W załączniku.
Zadanie 3
a) [tex]\frac{2}{5} + 0,67 = \frac{2}{5} + \frac{67}{100} = \frac{40}{100 } + \frac{67}{100} = \frac{107}{100} = 1\frac{7}{100}[/tex]
b) [tex]1,75 - \frac{5}{6} = \frac{7}{4} - \frac{5}{6} = \frac{21}{12} - \frac{10}{12} = \frac{11}{12}[/tex]
c) [tex]2,4 : 1\frac{3}{5} = \frac{12}{5} : \frac{8}{5} = \frac{12}{5} * \frac{5}{8} = 3 * \frac{1}{2} = \frac{3}{2} = 1\frac{1}{2}[/tex]
d) [tex]1\frac{3}{7} * 0,056 = \frac{10}{7} * \frac{7}{125} = 2 * \frac{1}{25} = \frac{2}{25}[/tex]
