Đáp án:
$\begin{array}{l}
b){5.2^3} + {7^{11}}:{7^9} - {1^8}\\
= 5.8 + {7^2} - 1\\
= 40 + 49 - 1\\
= 88\\
d)50 - \left[ {\left( {20 - {2^3}} \right):2 + 34} \right]\\
= 50 - \left( {20 - 8} \right):2 - 34\\
= 16 - 16:2\\
= 16 - 8 = 8\\
f)107 - \left\{ {38 + \left[ {{{7.3}^2} - 24:6 + {{\left( {9 - 7} \right)}^3}} \right]} \right\}:15\\
= 107 - \left[ {38 + \left( {7.9 - 4 + {2^3}} \right)} \right]:15\\
= 107 - 105:15\\
= 107 - 7\\
= 100\\
h)375:\left\{ {32 - \left[ {4 + \left( {{{5.3}^2} - 42} \right)} \right]} \right\} - 14\\
= 375:\left[ {32 - 4 - \left( {5.9 - 42} \right)} \right] - 14\\
= 375:\left( {28 - 3} \right) - 14\\
= 375:25 - 14\\
= 15 - 14\\
= 1\\
k)\left\{ {210:\left[ {16 + 3.\left( {6 + {{3.2}^2}} \right)} \right]} \right\} - 3\\
= 210:\left[ {16 + 3.\left( {6 + 12} \right)} \right] - 3\\
= 210:\left( {16 + 3.18} \right) - 3\\
= 210:70 - 3\\
= 3 - 3\\
= 0\\
h)400:\left\{ {5.\left[ {360 - \left( {290 + {{2.5}^2}} \right)} \right]} \right\}\\
= 400:\left[ {5.\left( {360 - 290 - 50} \right)} \right]\\
= 400:\left( {5.20} \right)\\
= 400:100\\
= 4
\end{array}$
