Expressões numéricas com adição e subtração - Exercícios

1 – Calcule o valor das expressões:

a) 10 – 1 + 8 – 4
b) 12 – 8 + 9 – 3
c) 25 – 1 – 4 – 7
d) 45 – 18 + 3 + 1 – 2
e) 75 – 10 – 8 + 5 – 1
f) 10 + 5 – 6 – 3 – 3 + 1

2 – Resolva as expressões com parênteses:

a) 30 – ( 5 + 3 )
b) 15 + ( 8 + 2 )
c) 25 – ( 10 – 1 – 3 )
d) 23 – ( 2 + 8 ) – 7
e) ( 10 + 5 ) – ( 1 + 6 )
f) 7 – ( 8 – 3 ) + 1

3 – Resolva as expressões com parênteses, colchetes e chaves:

a) 25 – [ 10 + ( 7 – 4 ) ]
b) 32 + [ 10 – ( 9 – 4 ) + 8 ]
c) 45 – [ 12 – 4 + ( 2 + 1 ) ]
d) 70 – { 20 – [ 10 – ( 5 – 1) ] }
e) 28 + { 13 – [ 6 – ( 4 + 1 ) + 2 ] – 1 }
f) 53 – { 20 – [ 30 – ( 15 – 1 + 6 ) + 2 ] }
g) 62 – { 16 – [ 7 – ( 6 – 4 ) + 1 ] }
h) 20 – { 8 + [ 3 + (8 – 5 ) – 1 ] + 6 }
i) 15 + { 25 – [ 2 – ( 8 – 6 ) ] + 2 }
j) 56 – [ 3 + ( 8 – 2 ) + ( 51 – 10 ) – ( 7 – 2 ) ]
k) { 42 + [ ( 45 – 19 ) – ( 18 – 3 ) + 1 ] – ( 28 – 15 ) – 1 }

Respostas:

1 – a) 13 b) 10 c) 13 d) 29 e) 61 f) 4
2 – a) 22 b) 25 c) 19 d) 6 e) 8 f) 3
3 – a) 12 b) 45 c) 34 d) 56 e) 37 f) 45 g) 52 h) 1 i) 38 j) 11 k) 40