Ta có: \(19\cdot4+19\cdot96-10\cdot10-25\cdot10+2\cdot5+4\cdot5\)
\(=19\left(4+96\right)-10\left(10+25\right)+5\cdot\left(2+4\right)\)
\(=19\cdot100-10\cdot35+5\cdot6\)
\(=10\cdot\left(19\cdot10-35+3\right)\)
\(=10\cdot\left(190-32\right)\)
\(=10\cdot158=1580\)
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19.4+19.96-10.10-25.10+2.5-4.5
=19(4+96)-10(10+25)+5(2+4)
=19.100-10.35+5.6
=1900-350+30
=1580
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