Đáp án:
$\begin{array}{l}
a){4.5^2} - 16:{2^2}\\
= 4.25 - {2^4}:{2^2}\\
= 100 - {2^2}\\
= 96\\
b)20 - \left[ {30 - {{\left( {5 - 1} \right)}^2}} \right]\\
= 20 - 30 + {4^2}\\
= - 10 + 16\\
= 6\\
c)28.76 + 24.28 - 120\\
= 28.\left( {76 + 24} \right) - 120\\
= 28.100 - 120\\
= 2800 - 120\\
= 2680\\
d)135 + 361 + 65 + 39\\
= \left( {135 + 65} \right) + \left( {361 + 39} \right)\\
= 200 + 400\\
= 600\\
e)25.7.10.4\\
= 25.4.7.10\\
= 100.70\\
= 7000\\
f)132 - \left[ {116 - {{\left( {132 - 128} \right)}^2}} \right]\\
= 132 - 116 + {4^2}\\
= 132 - 100 - 16 + 16\\
= 32
\end{array}$