Question

6) Resolva as expressões numéricas com Contas armadas:
a) 35 – [ 37 – ( 15 – 18 ) ] =
b) 32 + [20 – (24 – 2) -15 ] =
c) 36 + [ 13 + (10 – 6) + 4] =
d) 52 – { 12 + [ 15 – ( 8 – 4)]} =
e) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =
f) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =
g) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =
h) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } =
i) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 =
J) 25-[10 + (7 - 4)] =
k) 5² + 2³ - 2 x (3 + 9) =
l) 4²- 10 + (2³ - 5) =
m) 30 – (2 + 1)²+ 2³ =

Answer 1

Resposta:

a) 35 - [ 37 - ( 15 - 18 ) ]

35 - [ 37 - (-3)]

35-37-3

-2-3

-5

b) 32 + [20 - (24 - 2) -15 ]

32 + [ 20 - (22) - 15 ]

32 + ( -2 - 15)

32 + (-17)

15

c) 36 + [ 13 + (10 - 6) + 4]

36 + [ 13 + (4) + 4

36 + 21

57

d) 52 - { 12 + [ 15 - ( 8 - 4)]}

52 - {12 + [ 15 - (4) ]}

52 - 23

29

e) 25 + { 12 + [ 2 - ( 8 - 6 ) + 2 ]}

25 + {12 + [ 2 - (2) +2 ] }

25 + {12 + (2)}

25 + 14

39

f) { [ ( 18 - 3 ) + ( 7 + 5) - 2 ] + 5 } - 12

{ [ (15) + (12) - 2] + 5 } -12

{ [ (15 + 12 - 2)  + (-7)

25 + (-7)

18

g) 65 - { 30 - [ 20 - ( 10 - 1 + 6) + 1 ]}

65 - { 30 - [ 20 - (15) + 1]}

65 - { 30 - (6)}

65 - 24

41

h) 45 + { 15 - [ ( 10 - 8 ) + ( 7 - 4) - 3 ] - 4 }

45 + { 15 - [ (2) + (3) - 3] -4}

45 + {15 - (2) - 4}

45 + 9

54

i) 40 + { 50 - [35 - ( 25 + 5) - 1 ]} + 7

40 + { 50 - [ 35 - (30) - 1]} + 7

40 + { 50 - (4)} + 7

40 + (46) + 7

93

j) 25 - [10 + (7 - 4)]

25 - [ 10 + (3) ]

25 - (13)

12

k) 5² + 2³ - 2 x (3 + 9)

25 + 8 - 2 x 12

25 + 8 - 24

9

l) 4²- 10 + (2³ - 5)

16 - 10 + (8 - 5)

16 - 10 + 3

9

m) 30 – (2 + 1)²+ 2³

30 - ( 9) + 8

30 - 9 + 8

21 + 8

29

Answer 2

Resposta:

Olá!!

Explicação passo-a-passo:

Vamos lá!

a) 35 – [ 37 – ( 15 – 18 ) ] =

35 – [ 37 – ( – 3 ) ] =

35 – [ 40] =

– 5

b) 32 + [20 – (24 – 2) -15 ] =

32 + [20 – (22) -15 ] =

32 + [20 – 7] =

32 + 13 =

45

c) 36 + [ 13 + (10 – 6) + 4] =

36 + [ 13 + (4) + 4] =

36 + [ 13 + 8] =

36 + 21 =

57

d) 52 – { 12 + [ 15 – ( 8 – 4)]} =

52 – { 12 + [ 15 – (4)]} =

52 – { 12 + [ 11]} =

52 – { 23} =

29

e) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =

25 + { 12 + [ 2 – ( 2 ) + 2 ]} =

25 + { 12 + [ 2 ]} =

25 + { 14} =

39

f) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =

{ [ ( 15) + ( 12) – 2 ] + 5 } – 12 =

{ [ 27 – 2 ] + 5 } – 12 =

{ [ 25] + 5 } – 12 =

{30} – 12 =

18

g) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =

65 – { 30 – [ 20 – ( 15) + 1 ]} =

65 – { 30 – [ 5 + 1 ]} =

65 – { 30 – [ 6 ]} =

65 – { 24} =

41

h) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } =

45 + { 15 – [ ( 2 ) + ( 3) – 3 ] – 4 } =

45 + { 15 – [ 5 – 3 ] – 4 } =

45 + { 15 – [2 ] – 4 } =

45 + { 15 – 6} =

45 + 9 =

54

i) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 =

40 + { 50 – [35 – ( 30) – 1 ]} + 7 =

40 + { 50 – [5 – 1 ]} + 7 =

40 + { 50 – [4]} + 7 =

40 + {46} + 7 =

86 + 7 =

93

J) 25-[10 + (7 - 4)] =

25-[10 + (3)] =

25 - 13 =

12

k) 5² + 2³ - 2 x (3 + 9) =

25 + 8 - 2 x (12) =

33 - 24 =

9

l) 4²- 10 + (2³ - 5) =

16- 10 + (8 - 5) =

6 + (3) =

9

m) 30 – (2 + 1)²+ 2³ =

30 – (3)²+ 8 =

30 – 9+ 8 =

21 + 8 =

29

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