Question

1- Calcule o valor das expressões numéricas:

a) 45 – { 4 . [( 9 . 12 – 14 . 7 ) : ( 15 – 5 . 2 )]}=

b) 20 : 4 + 3 . 2 – 15 : 3=

c) [ 25 – ( 18 : 3 )]. { 5 – [ 18 – ( 4 . 5 – 4 )]}=

d) { 38 + [( 143 : 11 + 7 ) – 5 . 2]}: 6 =

e) 2 . [ ( 5 – 2 ) . ( 3 + 2 . 7 )] – 2 =

f) ( 8 + 6 . 8 : 4) + [ 3 + 15 : 5 + 5] =



g) 25 : 5 + ( 8 + 3 . 10 : 2) + ( 4 . 3 – 14 : 7)=

h) {[ 12 – 5 x 2 + ( 24 : 3 – 7) ] + 5} =



i) ( 32 – 8 : 4) + ( 45 : 9 + 8) – 6 =​

Answer 1

a) 45-{4*[(108-98)/(15-10)]}

45-{4*[10/5]}

45-{4*2}

45-8

R:37

b)5+6-5

R:6

c) [ 25 – 6 ]. { 5 – [ 18 – ( 20 – 4 )]}

[ 19 ]. { 5 – [ 18 – 16 ]}

[ 19 ]. { 5 – 2}

[ 19 ]. { 3}

R:57

d){ 38 + [( 13+ 7 ) – 10]}: 6

{ 38 + [20  – 10]}: 6

{38 + 10}: 6

48: 6

R:8

e) 2 . [ ( 5 – 2 ) . ( 3 + 14 )] – 2

2 . [  3  . 17 ] – 2

2 .  51  – 2

102-2

R:100

f) ( 8 + 6 . 2) + [ 3 + 3+ 5]

( 8 + 12) + [ 11]

20 +  11

R:31

Espero que esteja tudo certo =)