Zadanie 12
a) [tex]3\frac{1}{4} - \frac{3}{4} = 2\frac{5}{4} - \frac{3}{4} = 2\frac{2}{4}[/tex]
b) [tex]5\frac{5}{8} - \frac{7}{8} = 4\frac{13}{8} - \frac{7}{8} = 4\frac{6}{8}[/tex]
c) [tex]7\frac{3}{5} - \frac{4}{5} = 6\frac{8}{5} - \frac{4}{5} = 6\frac{4}{5}[/tex]
d) [tex]5\frac{1}{4} - 2\frac{3}{4} = 4\frac{5}{4} - 2\frac{3}{4} = 2\frac{2}{4}[/tex]
e) [tex]7\frac{1}{5} - 3\frac{3}{5} = 6\frac{6}{5} - 3\frac{3}{5} = 3\frac{3}{5}[/tex]
f) [tex]9\frac{1}{8} - 2\frac{7}{8} = 8\frac{9}{8} - 2\frac{7}{8} = 6\frac{2}{8}[/tex]
Zadanie 13
❀ Obliczenia:
[tex]\frac{1}{5} + \frac{3}{5} = \frac{4}{5}[/tex] [tex]\frac{7}{5} - \frac{3}{5} = \frac{4}{5}[/tex]
[tex]\frac{2}{5} + \frac{3}{5} = \frac{5}{5} = 1[/tex] [tex]1\frac{1}{5} - \frac{3}{5} = \frac{6}{5} - \frac{3}{5} = \frac{3}{5}[/tex]
[tex]2 - \frac{3}{5} = 1\frac{2}{5}[/tex] [tex]4\frac{3}{5} + \frac{3}{5} = 4\frac{6}{5} = 5\frac{1}{5}[/tex]
[tex]3\frac{1}{5} + \frac{3}{5} =3\frac{4}{5}[/tex] [tex]6\frac{2}{5} - \frac{3}{5} = 5\frac{7}{5} - \frac{3}{5} = 5\frac{4}{5}[/tex]
❀ W SKRÓCIE (zapisuj od lewej do prawej w puste okienka):
Góra [tex]1\frac{2}{5}[/tex] [tex]\frac{4}{5}[/tex] [tex]\frac{3}{5}[/tex] [tex]5\frac{4}{5}[/tex]
Dół [tex]\frac{4}{5}[/tex] [tex]1[/tex] [tex]3\frac{4}{5}[/tex] [tex]5\frac{1}{5}[/tex]
Zadanie 14
a) [tex]3\frac{1}{7} + 5\frac{4}{7} - 1\frac{6}{7} = 8\frac{5}{7} - 1\frac{6}{7} = 7\frac{12}{7} - 1\frac{6}{7} = 6\frac{6}{7}[/tex]
b) [tex]4 - (5\frac{1}{3} - 2\frac{2}{3}) = 4 - (4\frac{4}{3} - 2\frac{2}{3}) = 4 - 2\frac{2}{3} = 2\frac{2}{3}[/tex]
