Question

Calculează: 1/3 din 27
4/8din40
2/5din diferenta 810 si 325

Answer 1

$\rm \frac{1}{3} \cdot 27=9. \\ \\ \frac{4}{8} \cdot 40=4 \cdot 5=20 . \\ \\ \frac{2}{5} \cdot (810-325)= \frac{2}{5} \cdot 485= 2 \cdot 97=194.$

Answer 2

1/3*27=27/3=9
4/8*40=160/8=20
2/5*(810-325)=2/5*485=970/5=194