Odpowiedź:
1. [tex]\frac{1}{4} = \frac{25}{100}\\[/tex]
2. [tex]\frac{2}{5} = \frac{40}{100} \\[/tex]
3. [tex]\frac{15}{30} = \frac{75}{150}[/tex]
4. [tex]\frac{9}{16} * \frac{1}{3} = \frac{3}{16}[/tex]
5. [tex]\frac{8}{12} * \frac{3}{4} = \frac{2}{4} = \frac{1}{2}[/tex]
6. [tex]\frac{17}{18} : \frac{34}{9} = \frac{17}{18} * \frac{9}{34} = \frac{1}{4}[/tex]
7. [tex]\frac{21}{24} : \frac{3}{4} = \frac{21}{24} * \frac{4}{3} = \frac{7}{6}[/tex]
8. [tex]\frac{3}{4}[/tex] = 75%
75% masy ciała to 20 kg.
9. [tex]\frac{1}{2}[/tex] = 50%
[tex]\frac{8}{32} = \frac{1}{4}[/tex] = 25%
[tex]\frac{17}{100}[/tex] = 17%
10.12% = [tex]\frac{12}{100} = \frac{6}{50}[/tex]
16% = [tex]\frac{16}{100} = \frac{4}{25}[/tex]
75% = [tex]\frac{75}{100} = \frac{3}{4}[/tex]
