Odpowiedź :
zad. 1
[tex]2.3 = \frac{23}{10} = 2 \frac{3}{10} \\ 1.5 = \frac{15}{10} = \frac{3}{2} = 1 \frac{1}{2} [/tex]
zad. 2
[tex] \frac{3}{250} = \frac{12}{1000} = 0.012 \\ 3 \frac{7}{20} = \frac{67}{20} = \frac{335}{100} = 3.35[/tex]
zad. 5
[tex]0.6 \div \frac{3}{4} - \frac{2}{3} = \frac{6}{10} \times \frac{4}{3} - \frac{2}{3} = \frac{4}{5} - \frac{2}{3} = \frac{12}{15} - \frac{10}{15} = \frac{2}{15} [/tex]
zad. 6
[tex] \frac{2}{3} \times 60.9 = \frac{2}{3} \times \frac{609}{10} = \frac{203}{5} = 40 \frac{3}{5} [/tex]
zad. 7
[tex]0.75 \times \frac{4}{9} = \frac{75}{100} \times \frac{4}{9} = \frac{3}{4} \times \frac{4}{9} = \frac{1}{3} [/tex]