Question

Calcule:
1) 15+[6+(8-4:2)] =
2) 40-[3+(10-2):2]=
3) [30+2×(5-3)]×2-10=
4) 10+[4+(7×3+1)]-3=
5) (3+2)÷(5-1)+4=
6) 82-8×7:(4-1×3)=
7) 70-[12+(5×2-1)+6]=
8) 8:2+[15-(4×2+1)]=
9) 50+[10-2×[(6+4:2)-(10-3)]}=
10) 180:{10+2×[20-45:(13-2×5)]}=​

Answer 1

Resposta:

1) 27

2) 33

3) 58

4) 33

5) 5,25

6) 26

7) 43

8) 16

9) 58

10) 9

se vc quiser a explicação passo a passo eu mando

Answer 2

1) 15+[6+(8-4:2)]

$\textcolor{red}{ 15+[6+(8-4:2)] }$

$\textcolor{red}{ 15+[6+(8-2)] }$

$\textcolor{red}{ 15+[6+6] }$

$\textcolor{red}{ 15+12=27}\textcolor{blue}{\checkmark}$

2)

$\textcolor{red}{40-[3+(10-2):2]}$

$\textcolor{red}{40-[3+(8):2]}$

$\textcolor{red}{40-[3+4]}$

$\textcolor{red}{40-[7]}$

$\textcolor{red}{40-7=33}\textcolor{blue}{\checkmark}$

3)

$\textcolor{red}{ [30+2×(5-3)]×2-10=}$

$\textcolor{red}{ [30+2×(2)]×2-10=}$

$\textcolor{red}{ [30+4]×2-10=}$

$\textcolor{red}{ 34×2-10=}$

$\textcolor{red}{ 68-10=58}\textcolor{blue}{\checkmark}$

4) 10+[4+(7×3+1)]-3=

$\textcolor{red}{10+[4+(7×3+1)]-3=}$

$\textcolor{red}{10+[4+(21+1)]-3=}$

$\textcolor{red}{10+[4+22]-3=}$

$\textcolor{red}{10+26-3=33}\textcolor{blue}{\checkmark}$

5)

$\textcolor{red}{ (3+2)÷(5-1)+4=}$

$\textcolor{red}{ (5)÷(4)+4=}$

$\textcolor{red}{ 1,25+4=5,25}\textcolor{blue}{\checkmark}$

6)

$\textcolor{red}{82-8×7:(4-1×3)}$

$\textcolor{red}{82-8×7:(4-3)}$

$\textcolor{red}{82-8×7:1}$

$\textcolor{red}{82-8×7}$

$\textcolor{red}{82-56}$

$\textcolor{red}{26}\textcolor{blue}{\checkmark}$

7)

$\textcolor{red}{70-[12+(5×2-)+6]}$

$\textcolor{red}{70-[12+(10)+6]}$

$\textcolor{red}{70-[12+10+6]}$

$\textcolor{red}{70-[28]}$

$\textcolor{red}{70-28}$

$\textcolor{red}{2}\textcolor{blue}{\checkmark}$

8)

$\textcolor{red}{8:2+[15-(4×2+1)]}$

$\textcolor{red}{8:2+[15-(8+1)]}$

$\textcolor{red}{8:2+[15-9]}$

$\textcolor{red}{8:2+6}$

$\textcolor{red}{4+6}$

$\textcolor{red}{10}\textcolor{blue}{\checkmark}$

9)

$\textcolor{red}{ 50+[10-2\times[(6+4:2)-(10-3)]}$

$\textcolor{red}{ 50+[10-2\times[(6+2)-(7)]}$

$\textcolor{red}{ 50+[10-2\times[8-7]}$

$\textcolor{red}{ 50+[10-2\times1]}$

$\textcolor{red}{ 50+[10-2]}$

$\textcolor{red}{ 50+8}$

$\textcolor{red}{50+8=58}\textcolor{blue}{\checkmark}$

10)

$\textcolor{red}{180:{10+2\times[20-45:(13-2×5)]}}$

$\textcolor{red}{180:{10+2\times[20-45:(13-10)]}}$

$\textcolor{red}{180:{10+2×[20-45:3]}}$

$\textcolor{red}{180:{10+2\times[20-15]}}$

$\textcolor{red}{180:{10+2\times5}}$

$\textcolor{red}{180:{10+10}}$

$\textcolor{red}{180:20=9}\textcolor{blue}{\checkmark}$

$\textcolor{blue}{\mathfrak{Dúvidas? \:comente!}}$