Question

calcule :
a){2+[27÷(10-1)+4×3]}

b)10-1+8-4

c)23-(2+8)-7

d)74+{10-[5-(6-4)+1]}


e)30-40÷(8-3)÷2


f)100-413÷(20-5×4)+1


g)50+{10-2×[(6+4÷2)-(10-3)]}


h)[40+2×(7-5)]×2-20



i)100-3×{5+8÷2-[8-3×(7-6)]}



​

Answer 1

Resposta:

A) {2+[27÷(10-1)+4×3]}

{2-[27÷9+4×3]}

{2+[3+4×3]}

{2+21}

23

B) 10-1+8-4

9+8-4

17-4

13

C) 23-(2+8)-7

23-10-7

13-7

6

D)74+{10-[5-(6-4)+1]}

74+{10-[5-2+1]}

74+{10-[3+1]}

74+{10-4}

74+6

80

E) 30-40÷(8-3)÷2

30-40÷5÷2

-10÷5÷2

-2÷2

-1

F) 100-413÷(20-5×4)+1

100-413÷(15×4)+1

100-413÷60+1

-313÷60+1

521+1

522

G) 50+{10-2×[(6+4÷2)(10-3)]}

50+{10-2×[(10+2)-(10-3)]}

50+{10-2×[5-(10-3)]}

50+{10-2×[5-7]}

50+{10-2×2}

50+{8×2}

50+16

66

H)[40+2×(7-5)]×2-20

[40+2×2]×2-20

[42×2]×2-20

84×2-20

168-20

148

I)100-3×{5+8÷2-[8-3×(7-6)]}

100-3×{5+8÷2-[8-3×1]}

100-3×{5+8÷2-[5×1]}

100-3×{5+8÷2-5}

100-3×{13÷2-5}

100-3×{6,5-5}

100-3×1,5

93×1,5

145,5

(espero ter ajudado desculpe se minha letra não e tão bonita)