(2012•宝应县模拟) 脱式计算
1个回答

(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.