Đáp án:

$\begin{array}{l}
a)160 - \left( {{2^3}{{.5}^2} - 6.25} \right)\\
 = 160 - 25.\left( {{2^3} - 6} \right)\\
 = 160 - 25.2\\
 = 160 - 50\\
 = 110\\
 = 2.5.11\\
b){4.5^2} - 32:{2^4}\\
 = 4.25 - 32:16\\
 = 100 - 2\\
 = 98\\
 = {2.7^2}\\
c)5871:\left[ {982 - \left( {247 - 82.5} \right)} \right]\\
 = 5871:\left( {982 - 247 + 410} \right)\\
 = 5871:325\\
 = 18,064\\
d)777:7 + 1331:{11^3}\\
 = 111 + 1331:1331\\
 = 111 + 1\\
 = 112\\
 = {2^4}.7\\
e){6^2}:4.3 + {2.5^2}\\
 = 36:4.3 + 2.25\\
 = 9.3 + 50\\
 = 27 + 50\\
 = 77\\
 = 7.11\\
h)80 - \left( {{{4.5}^2} - {{3.2}^3}} \right)\\
 = 80 - \left( {4.25 - 3.8} \right)\\
 = 80 - 100 + 24\\
 = 4\\
i)23.75 + 25.23 + 180\\
 = 23.\left( {75 + 25} \right) + 180\\
 = 23.100 + 180\\
 = 2300 + 180\\
 = 2480\\
k){2^4}.5 - \left[ {131 - {{\left( {13 - 4} \right)}^2}} \right]\\
 = 16.5 - \left( {131 - {9^2}} \right)\\
 = 80 - \left( {131 - 81} \right)\\
 = 80 - 50\\
 = 30\\
m)100:\left\{ {250:\left[ {450 - \left( {{{4.5}^3} - {2^2}.25} \right)} \right]} \right\}\\
 = 100:\left\{ {250:\left( {450 - 4.\left( {125 - 25} \right)} \right)} \right\}\\
 = 100:\left[ {250:\left( {450 - 4.100} \right)} \right]\\
 = 100:\left( {250:50} \right)\\
 = 100:50\\
 = 2
\end{array}$

Đáp án+Giải thích các bước giải: Gửi e kham khảo, hình bên dưới e nhé