Odpowiedź:
Zad. 3
I. [tex]3\frac{1}{10} + 3\frac{2}{5} = 3\frac{1}{10} + 3\frac{4}{10} = 6\frac{5}{10} = 6\frac{1}{2}[/tex]
Prawda
II. [tex]2\frac{7}{10} + \frac{3}{5} = 2\frac{7}{10} + \frac{6}{10} = 3\frac{3}{10}[/tex]
Fałsz
III. [tex]\frac{3}{4} + 4\frac{2}{9} = \frac{27}{36} + 4\frac{8}{36} = 4\frac{35}{36}[/tex]
[tex]3\frac{5}{6} + 1\frac{5}{36} = 3\frac{30}{36} + 1\frac{5}{36} = 4\frac{35}{36}[/tex]
Prawda
IV. [tex]2\frac{9}{10} + 1\frac{16}{25} = 2\frac{45}{50} + 1\frac{32}{50} = 4\frac{27}{50}[/tex]
[tex]5\frac{1}{25} + \frac{1}{2} = 5\frac{2}{50} + \frac{25}{50} = 5\frac{27}{50}[/tex]
Prawda
