a) \(58\cdot75+58\cdot50-58\cdot25\)
\(=58\cdot\left(75+50-25\right)\)
\(=58\cdot100\)
\(=5800\)
b) \(27\cdot39+27\cdot63-2\cdot27\)
\(=27\cdot\left(39+63-2\right)\)
\(=27\cdot100\)
\(=2700\)
c) \(128\cdot46+128\cdot32+128\cdot22\)
\(=128\cdot\left(46+32+22\right)\)
\(=128\cdot100\)
\(=12800\)
d) \(66\cdot25+5\cdot66+66\cdot14+33\cdot66\)
\(=66\cdot\left(25+5+14+33\right)\)
\(=66\cdot77\)
\(=5082\)
e) \(12\cdot35+35\cdot182-35\cdot94\)
\(=35\cdot\left(12+182-94\right)\)
\(=35\cdot100\)
\(=3500\)
f) \(35\cdot23+35\cdot41+64\cdot65\)
\(=35\cdot\left(23+41\right)+64\cdot65\)
\(=35\cdot64+64\cdot65\)
\(=64\cdot\left(35+65\right)\)
\(=64\cdot100\)
\(=6400\)
g) \(29\cdot87-29\cdot23+64\cdot71\)
\(=29\cdot\left(87-23\right)+64\cdot71\)
\(=29\cdot64+64\cdot71\)
\(=64\cdot\left(71+29\right)\)
\(=64\cdot100\)
\(=6400\)
