Obliczenia
[tex]4,3+\frac{2}{5}=4,3+\frac{2\cdot2}{5\cdot2}=4,3+\frac{4}{10}=4,3+0,4=4,7\\\\5,25-2\frac{1}{8}=5,25-2\frac{1\cdot125}{8\cdot125}=5,25-2\frac{125}{1000}=5,25-2,125=3,125\\\\4,8-2\frac{3}{7}=4\frac{8}{10}-2\frac{3}{7}=4\frac{8:2}{10:2}-2\frac{3}{7}=4\frac{2}{5}-2\frac{3}{7}=4\frac{2\cdot7}{5\cdot7}-2\frac{3\cdot5}{7\cdot5}=\\\\=4\frac{14}{35}-2\frac{15}{35}=3\frac{49}{35}-2\frac{15}{35}=1\frac{34}{35}[/tex]
Odpowiedź:
4,3 + 2/5= 4 3/10 + 2/5= 43/10 + 2/5= 43/10 + 4/10= 47/10
5,25 - 2 1/8= 5,25 - 2,125= 3,125
4,8- 2 3/7= 4 8/10 - 2 3/7= 4 56/70 - 2 30/70= 2 26/70
