Răspuns :
[tex] \frac{3}{5} \times 80 = 3 \times 16 = 48[/tex]
*Se simplifica 5 si 80 prin 5.
[tex]\it \dfrac{3}{5} \ din\ 80 = \dfrac{3}{5} \cdot 80 = 3\cdot 16 = 48[/tex]
Sau:
[tex]\it \dfrac{1}{5} \ din\ 80 = 80:5=16 \\ \\ \\ \dfrac{3}{5}\ din \ 80 = 3\cdot16=48[/tex]