5) Calcule as expressões numéricas:

a) (13+2)x3+5 =

b) (7+2)x(3-1) =

c) (4+2x5)-3 =

d) 20-(15+6:3) =

e) 7 – ( 8 – 3 ) + 1 =

f) 25 – [ 10 + ( 7 – 4 ) ] =

g) 32+ [ 10 – ( 9 – 4 ) + 8 ] =

h) 45 – [ 12 – 4 + ( 2 + 1 )] =

i) 70 – { 20 – [ 10 – ( 5 – 1 ) ]} =

j) 28 + { 13 – [ 6 – ( 4 + 1 ) + 2 ] – 1 } =

k) 53 – { 20 – [ 30 – ( 15 – 1 + 6 ) + 2 ]} =

l) 62 – { 16 – [ 7 – ( 6 – 4 ) + 1 ]} =

m) 20 – { 8 + [ 3 + ( 8 – 5 ) – 1 ] + 6} =

n) 15 + { 25 – [ 2 – ( 8 – 6 )] + 2 } =

o) 56 – [ 3 + ( 8 – 2 ) + ( 51 – 10 ) + ( 7 - 2 )] =

p) { 42 + [ (45 – 19) – ( 18 – 3 ) + 1] – (28 – 15 )} =

q) 7 – ( 1 + 3 ) =

Exercício 4