matematica

EXERCICIOS PARA REVISÃO DO ENSINO MÉDIO

(1) Calcule o valor das expressões:
a) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} = (R:39)
b) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 = (R:18)
c) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} = (R: 41)
d)45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } = (R:54)
e) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 = (R:93)
f)38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} = ( R:36)
g) 26 + { 12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 } = (R:28)

2) Calcule o valor das expressões

a) 10 - 5 - 2 + 3 = (R: 6)
b) 10 - ( 5 + 2) + 3 = (R:6)
c) ( 10 - 5) - ( 2 + 3) = ( R: 0)
d) 10 - ( 5 - 2 + 3) = ( R: 4)
e) ( 17 + 9 ) - 8 - ( 11 + 4) = (R: 3)
f) 86 + ( 31 - 16 + 60 ) - ( 200 - 70 - 50 ) = ( R: 81)
g) ( 79 + 21 - 84) + ( 63 - 41 + 17 ) - 26 = ( R: 29)

3) Calcule o valor das expressões:
a) 10 – 1 + 8 – 4 = (R 13)
b) 12 – 8 + 9 – 3 = (R: 10)
c) 25 – 1 – 4 – 7 = ( R: 13)
d) 30 – ( 5 + 3 ) = ( R: 22)
e) 15 + ( 8 + 2 ) = (R: 25)
f) 25 – ( 10 – 1 – 3 ) = (R: 19)
g) 45 – 18 + 3 + 1 – 2 = ( R: 29)
h) 75 – 10 – 8 + 5 – 1 = (R: 61)
i) 10 + 5 – 6 – 3 – 3 + 1 = (R: 4)

j) 23 – ( 2 + 8 ) – 7 = (R: 6)
k) ( 10 + 5 ) – ( 1 + 6 ) = ( R: 8)
l) 7 – ( 8 – 3 ) + 1 = (R: 3)
m) 25 – [ 10 + ( 7 – 4 ) ] = (R: 12)
n)32+ [ 10 – ( 9 – 4 ) + 8 ] =- (R: 45)
o) 45 – [ 12 – 4 + ( 2 + 1 )] = (R: 34)
p) 70 – { 20 – [ 10 – ( 5 – 1 ) ]} = (R: 56)
q) 28 + { 13 – [ 6 – ( 4 + 1 ) + 2 ] – 1 } = ( R: 37)
r) 53 – { 20 – [ 30 – ( 15 – 1 + 6 ) + 2 ]} = (R: 45)
s) 62 – { 16 – [ 7 – ( 6 – 4 ) + 1 ]} = (R: 52)
t) 20 – { 8 + [ 3 + ( 8 – 5 ) – 1 ] + 6} = (R: 1)
u) 15 + { 25 – [ 2 – ( 8 – 6 )] + 2 } = ( R: 42)
v) 56 – [ 3 + ( 8 – 2 ) + ( 51 – 10 ) + ( 7 - 2 )] = (R: 1)
w) { 42 + [ (45 – 19) – ( 18 – 3 ) + 1] – (28 – 15 )} = (R: 41)
x) 7 – ( 1 + 3 ) = (R: 3)
y) 9 – ( 5 – 1 + 2 ) = (R: 3)
z) 10 – ( 2 + 5 ) + 4 = (R: 7)

1 - Transforme numa só potencia:

2 - Transforme numa só potencia:

3 - Resolva os exercícios quando a = 2³ e b = 2² e c = 3³

4 - siga os