a)
[tex] \frac{1}{5} \times \frac{40}{1} = \frac{40}{5} = 8[/tex]
b)
[tex] \frac{1}{3} \times \frac{21}{1} = \frac{21}{3} = 7[/tex]
c)
[tex] \frac{1}{4} \times \frac{100}{1} = \frac{100}{4} = 25[/tex]
d)
[tex] \frac{3}{4} \times \frac{60}{1} = \frac{180}{4} = 45[/tex]
e)
[tex]1 \frac{3}{4} \times \frac{1000}{1} = \frac{7}{4} \times \frac{1000}{1} = \frac{7000}{4} = 1750[/tex]
Myślę że pomogłem ;)