(1)2500+450÷18×32,
=2500+25×32,
=2500+25×4×8,
=2500+100×8,
=2500+800,
=3300;
(2)26×[24/25],
=(25+1)×[24/25],
=25×[24/25]+1×[24/25],
=24+[24/25],
=24[24/25];
(3)47×([1/23]+[2/47])×23,
=(47×23)×([1/23]+[2/47]),
=47×23×[1/23]+47×23×[2/47],
=47+46,
=93.
(1)2500+450÷18×32,
=2500+25×32,
=2500+25×4×8,
=2500+100×8,
=2500+800,
=3300;
(2)26×[24/25],
=(25+1)×[24/25],
=25×[24/25]+1×[24/25],
=24+[24/25],
=24[24/25];
(3)47×([1/23]+[2/47])×23,
=(47×23)×([1/23]+[2/47]),
=47×23×[1/23]+47×23×[2/47],
=47+46,
=93.