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Se da exercitiul: 5X4:2+8-2. Foloseste parantezele pentru a obtine pe rand: A) 40 B) 16 C) 48

Răspuns :

B) (5X4):2+(8-2)=20:2+6=10+6=16
C) 5X(4:2+8)-2=5*10-2=50-2=48
A) 5X(4:2+8-2)=5X(2+8-2)=5X8=40

5×4:2+8-2
a)5×(4:2+8-2)
5×(2+8-2)
5×8=40
b)(5×4):2+8-2
20:2+8-2
10+8-2=16
c)5×(4:2+8)-2
5×10-2=50-2=48