Thực hiện phép tính (tính hợp lí nếu có thể):

a) \({2^3}{.2^2} + {4^4}:{4^4} - {2024^0}\)

\( = {2^5} + 1 - 1\)

\( = 32\).

b) \(\left( {2025 - 39} \right) + \left[ {\left( { - 25} \right) + \left( { - 61} \right)} \right]\)

\( = 2025 - 39 + \left( { - 25} \right) + \left( { - 61} \right)\)

\[ = \left[ {2025 + \left( { - 25} \right)} \right] + \left[ { - 39 + \left( { - 61} \right)} \right]\]

\( = 2000 + \left( { - 100} \right)\)

\( = 1900\).

c) \(12.\left( { - 25} \right).4 - 480:\left( { - 8} \right)\)

\( = 12.\left( { - 100} \right) - \left( { - 60} \right)\)

\( =  - 1\,\,200 + 60\)

\( =  - 1\,\,140\).

d) \(47.8 - 27.9 + 47.12 - 27.11\)

\( = \left( {47.8 + 47.12} \right) - \left( {27.9 + 27.11} \right)\)

\( = 47\left( {8 + 12} \right) - 27\left( {9 + 11} \right)\)

\( = 47.20 - 27.20\)

\( = 20.\left( {47 - 27} \right)\)

\( = 20.20\)

\( = 400\).