Thực hiện phép tính (tính hợp lí nếu có thể):
a) \({5^{12}}:{5^{10}} - 160:10 + {2024^0}\)
\( = {5^2} - 16 + 1\)
\( = 25 - 16 + 1\)
\( = 10\).
c) \(\left( { - 4} \right).8.\left( { - 125} \right).\left( { - 3} \right)\)
\( = \left[ {8.\left( { - 125} \right)} \right].\left[ {\left( { - 4} \right).\left( { - 3} \right)} \right]\)
\( = \left( { - 1000} \right).12\)
\( = - 12\,\,000\).
b) \( - 424 + \left( { - 371} \right) - \left( { - 424} \right) - 29\)
\( = \left( { - 424 + 424} \right) + \left[ {\left( { - 371} \right) - 29} \right]\)
\( = 0 + \left( { - 400} \right)\)
\( = - 400\).
d) \[ - 48 + 48.\left( { - 78} \right) + 48.\left( { - 21} \right)\]
\[ = 48.\left( { - 1} \right) + 48.\left( { - 78} \right) + 48.\left( { - 21} \right)\]
\( = 48.\left[ {\left( { - 1} \right) + \left( { - 78} \right) + \left( { - 21} \right)} \right]\)
\( = 48.\left( { - 100} \right)\)
\( = - 4\,800\).