Zad 1.
[tex]3 \frac{4}{5} = \frac{19}{5} [/tex]
Zad 2.
[tex] \frac{34}{7} = 4 \frac{6}{7} [/tex]
Zad 3.
[tex] \frac{6}{15} = \frac{2}{5} [/tex]
Zad 4
a) prawda, bo:
[tex] \frac{18}{111} = \frac{6}{37} [/tex]
Zad 5.
A) prawda bo:
[tex] \frac{1}{12} [/tex]
[tex] \frac{1}{2} = \frac{6}{12} [/tex]
[tex] \frac{5}{6} = \frac{10}{12} [/tex]
Zad 6.
[tex] \frac{6}{7} = \frac{54}{63} [/tex]
Zad 7.
[tex]4 \frac{1}{5} + \frac{3}{4} = 4 \frac{4}{20} + \frac{15}{20} = 4 \frac{19}{20} [/tex]
Zad 8.
[tex]16 - 3 \frac{1}{4} \times 2 \frac{1}{2} = 16 - \frac{13}{4} \times \frac{5}{2} = 16 - \frac{65}{8} = 16 - 8 \frac{1}{8} = 15 \frac{8}{8} - 8 \frac{1}{8} = 7 \frac{7}{8} [/tex]
Zad 9
[tex]5 \frac{1}{4} \div \frac{7}{8} = \frac{21}{4} \div \frac{7}{8} = \frac{21}{4} \times \frac{8}{7} = \frac{3}{1} \times \frac{2}{1} = 6[/tex]
Zad 10.
[tex]280 \times \frac{5}{7} = \frac{1400}{7} = 200[/tex]
Pozdrowionka! ~Wika
