14) *Resolva as expressões numéricas abaixo:*
a) 7 – ( 1 + 3) =
b) 9 – ( 5 – 1 + 2) =
c) 10 – ( 2 + 5 ) + 4 =
d) ( 13 – 7 ) + 8 – 1 =
e) 15 – ( 3 + 2) – 6 =
f) ( 10 – 4 ) – ( 9 -8) + 3 =
g) 50 – [ 37 – ( 15 – 8 ) ] =
h) 28 + [50 – (24 – 2) -10 ] =
i) 20 + [ 13 + (10 – 6) + 4] =
j) 52 – { 12 + [ 15 – ( 8 – 4)]} =
k) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =
l) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =
m) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =
n) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } =
o) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 =
p) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} =
Soluções para a tarefa
Resposta:
a) 7 – ( 1 + 3) =
7 - 4 = 3
b) 9 – ( 5 – 1 + 2) =
9 - ( 4 + 2) =
9 - 6 = 3
c) 10 – ( 2 + 5 ) + 4 =
19 - 7 + 4 =
12 + 4 = 16
d) ( 13 – 7 ) + 8 – 1 =
6 + 7 = 13
e) 15 – ( 3 + 2) – 6 =
15 - 5 - 6 =
10 - 6 = 4
f) ( 10 – 4 ) – ( 9 -8) + 3 =
6 - 1 + 3 = 8
g) 50 – [ 37 – ( 15 – 8 ) ] =
50 - [ 37 - ( 7 ) ] =
50 - [ 37 - 7 ] =
50 - 30 = 20
h) 28 + [50 – (24 – 2) -10 ] =
28 + [ 50 - 22 - 10 ] =
28 + 18 = 46
i) 20 + [ 13 + (10 – 6) + 4] =
20 + [ 13 + 4 + 4 ] =
20 + 21 = 41
j) 52 – { 12 + [ 15 – ( 8 – 4)]} =
52 - { 12 + [ 15 - 4 ) ] } =
52 - { 12 + 11 } =
52 - 23 = 29
k) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =
25 + { 12 + [ 2 - 2 + 2]} =
25 + {12 + 2 } =
25 + 14 = 39
l) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =
{ [ 15 + 12 -2 ] +5 } -12 =
{ [ 25 ] +5 } -12 =
30 - 12 = 18
m) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =
65 - { 30 - [ 20 - 15 +1] } =
65 - { 30 - 6 } =
65 - 24 = 41
n) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } =
45 + { 15 - [ 2 + 3 -3 ] -4 } =
45 + { 15 - 2 -4} =
45 + { 9 } = 54
o) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 =
40 + { 50 - [ 35 - 30 -1]} +7 =
40 + { 50 - 4 } +7 =
40 + 44 +7 = 91
p) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} =
38 - { 20 - [ 22 - 8 + 4 ] } =
38 - { 20 - 18 } =
38 - 2 = 36
Explicação passo-a-passo: