tính nhanh ssss

Đáp án:

$\begin{array}{l}
d)\\
47.27 - 8,3.49 + 53.27 - 8,3.51\\
 = \left( {47.27 + 53.27} \right) - 8,3.\left( {49 + 51} \right)\\
 = 27.\left( {47 + 53} \right) - 8,3.100\\
 = 27.100 - 8,3.100\\
 = 100.\left( {27 - 8,3} \right)\\
 = 100.18,7\\
 = 187\\
e)41.25 - 8,1.47 + 59.25 - 0,81.530\\
 = 25.\left( {41 + 59} \right) - 8,1.47 - 8,1.53\\
 = 25.100 - 8,1.\left( {47 + 53} \right)\\
 = 25.100 - 8,1.100\\
 = 100.\left( {25 - 8,1} \right)\\
 = 100.16,9\\
 = 169\\
g)\left( {1 + 4 + 7 + ... + 100} \right)\\
.\left( {141.141.142 - 142.142.141} \right)\\
 = \frac{{\left( {100 + 1} \right).\left( {\frac{{100 - 1}}{3} + 1} \right)}}{2}.141.142.\left( {141 - 142} \right)\\
 = \frac{{101.34}}{2}.141.142.\left( { - 1} \right)\\
 =  - 101.17.141.142\\
 =  - 34377774\\
h)57,12.3,1.\left( {530 - 265.2} \right)\\
 = 57,12.3,1.\left( {530 - 530} \right)\\
 = 57,12.3,1.0\\
 = 0
\end{array}$