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1.Calculeaza in doua moduri.
4*31*68
4*31*68


Răspuns :

1.4x31x68=124x68=8432

2.4x31x68=
(2x31)x(2x68)=
62x136=
8432

In a doua metoda am descumpus pe 4 in 2 si 2
(4*31)*68=124*68=8432
4*(31*68)=4*2108=8432
sper ca te-am ajutat