Question

05- Resolva as expressões numéricas abaixo: (valor: 1,0) a) 7 – ( 1 + 3) = b) 9 – ( 5 – 1 + 2) = c) 52 + 23 - 2 x (3 + 9) = d) (72 - 1 ) : 3 + 2 x 5 =

Answer 1

a) 7 – ( 1 + 3) =

7 - 4 =

3

b) 9 – ( 5 – 1 + 2) =

9 - 6 =

 3

c) 52 + 23 - 2 x (3 + 9) =

75 - 2.12 =

75 - 24 =

  51

d) (72 - 1 ) : 3 + 2 x 5 =

$\frac{71}{3} +10=$ $\frac{71+30}{3}$ = $\frac{101}{3} =81$