Question

Calculează, respectând regulile învățate:
(8-6) (9-4)=
100 : 10 x (6 + 4) =
(7-7) x 7 + 2 x 2 x 2 =
(18-9): 3 + (4 + 5)2 =​

Answer 1

(8-6)×(9-4)=2×5=10

100:10×(6+4)=100:10×10=10×10=100

(7-7)×7+2×2×2=0×7+2×2×2=0+4×2=0+8=8

(18-9):3+(4+5)×2=9:3+(4+5)×2=9:3+9×2=3+18=21