Question

1) Calcule:
a) 3,97 x 1000=
b) 2,564 x 1000=
2) Resolva as expressões numéricas.
a) 50 – 3 x 8 + 18 : 9
b) {9 + 6 x [14 : 2 – 5 + (8 x 4 – 12)]}
c) 46 – (12 x 3 + 10) + 8
d) 90 + 27 : 9 – 5 x 6
e) {3 x 50 + [(16 + 64 : 16) x 3] x 2}

Me ajudem pfv

Answer 1

Resposta:

Explicação passo-a-passo:

a) 3,97 x 1000=3970

b) 2,564 x 1000=2564

2) Resolva as expressões numéricas.

a) 50 – 3 x 8 + 18 : 9

50 - 24 + 18 : 9

50 - 24 + 2

26 + 2

28

b) {9 + 6 x [14 : 2 – 5 + (8 x 4 – 12)] }

{9 + 6 x [ 14 : 2 - 5 + (32 - 12 )] }

{ 9 + 6 x [14 : 2 - 5 + 20] }

{ 9 + 6 x [ 7 - 5 + 20 ] }

{ 9 + 6 x [ 2 + 20 ]  }

{ 9 + 6 x 22}

{ 9 + 132 }

141

c) 46 – (12 x 3 + 10) + 8

46 - ( 36 + 10 ) + 8

46 - 46 + 8

0+8

8

d) 90 + 27 : 9 – 5 x 6

90 + 3 - 5 x 6

90 + 3 - 30

93 - 30

63

e) {3 x 50 + [(16 + 64 : 16) x 3] x 2}

{ 3 x 50 + [ ( 16 + 4 ) x 3 ] x 2 }

{ 3 x 50 + [ 20 x 3 ] x 2 }

{ 3 x 50 + 60 x 2 }

{150 + 60 x 2}

{ 150 + 120}

270