Question

4. Găseşte două metode de rezolvare: 72 000:5+ 72 000:10 + 72 000:15 = ?

Answer 1

Răspuns:

METODA 1

72000:5+72000:10+72000:15

14.400+7200+4800=26.400

METODA 2

72000:5+72000:10+72000:15=

72.000x(1/5+1/10+1/15)=

Aducem la același numitor care este 30

72.000x(6/30+3/30+2/30)=

72.000x11/30=

2.400x11=

26.400