a)
[tex]1 \div \frac{2}{5} = 1 \times \frac{5}{2} = \frac{5}{2} = 2 \frac{1}{2} [/tex]
b)
[tex] \frac{5}{2} \div \frac{2}{5} = \frac{5}{2} \times \frac{5}{2} = \frac{25}{10} = 2 \frac{1}{2} [/tex]
c)
[tex]\frac{1}{2} : \frac{2}{5}= \frac{1}{2} *\frac{5}{2}=\frac{5}{4}=1\frac{1}{4}[/tex]
d)
[tex]1 \times \frac{2}{5} = \frac{2}{5} [/tex]
e)
[tex] \frac{5}{2} \times \frac{2}{5} = 1[/tex]
f)
[tex] \frac{1}{2} \times \frac{2}{5} = \frac{1}{5} [/tex]
g)
[tex]8 \div \frac{2}{5} = \frac{8}{1} \times \frac{5}{2} = \frac{4}{1} \times \frac{5}{1} = 20[/tex]
h)
[tex] \frac{7}{10} \div \frac{2}{5} = \frac{7}{10} \times \frac{5}{2} = \frac{7}{2} \times \frac{1}{2} = \frac{7}{4} = 1 \frac{3}{4} [/tex]
i)
[tex] \frac{4}{5} \div \frac{2}{5} = \frac{4}{5} \times \frac{5}{2} = \frac{2}{1} \times \frac{1}{1} = 2[/tex]
Myślę że pomogłem ;)
