Rezolva in doua moduri inmultirile de mai jos

Rezolva in doua moduri inmultirile de mai jos

Rezolvare

Metoda 1

a)

6 x (4 + 3) = 6 x 7 = 42

b)

9 x (7 - 5) = 9 x 2 = 18

c)

(8 - 3) x 4 = 5 x 4 = 20

Metoda 2

a)

6 x (4 + 3) = 6 x 4 + 6 x 3 = 24 + 18 = 42

b)

9 x (7 - 5) = 9 x 7 - 9 x 5 = 63 - 45 = 18

c)

(8 - 3) x 4 = 8 x 4 - 3 x 4 = 32 - 12 = 20

Probleme si exercitii rezolvate clasa a 3-a

Probleme si exercitii rezolvate