5.
a)
[tex]1 \frac{1}{2} \times 5 = \frac{3}{2} \times 5 = \frac{15}{2} = 7 \frac{1}{2} [/tex]
b)
[tex]1 \frac{2}{3} \times 8 = \frac{5}{3} \times 8 = \frac{40}{3} = 13 \frac{1}{3} [/tex]
c)
[tex]3 \frac{1}{2} \times 4 = \frac{7}{2} \times 4 = 14[/tex]
d)
[tex]2 \frac{2}{5} \times 15 = \frac{12}{5} \times 15 = 36[/tex]
6. w załączniku
[tex]1 \frac{1}{15} \times 10 = \frac{16}{15} \times 10 = \frac{32}{3} = 10 \frac{2}{3} [/tex]
[tex]1 \frac{3}{4} \times 48 = \frac{7}{4} \times 48 = 84[/tex]
[tex]10 \frac{2}{3} \times 84 = \frac{32}{3} \times 84 = 896[/tex]
