问题 解答题
怎样简便怎样算.
55×25+25×4577×13-13×27142+586+358+11444×25
104×3255-36÷3+15400÷〔300-(260-160)〕540÷(30×15÷15)
答案

(1)55×25+25×45,

=(55+45)×25,

=100×25,

=2500;

(2)77×13-13×27,

=(77-27)×13,

=50×13,

=650;

(3)142+586+358+114,

=(142+358)+(586+114),

=500+700,

=1200;

(4)44×25,

=11×4×25,

=11×(4×25),

=11×100,

=1100;

(5)104×32,

=(100+4)×32,

=100×32+4×32,

=3200+128,

=3328;

(6)55-36÷3+15,

=55-12+15,

=43+15,

=58;

(7)400÷〔300-(260-160)〕,

=400÷〔300-100〕,

=400÷200,

=2;

(8)540÷(30×15÷15),

=540÷30,

=18.

问答题 简答题
问答题 简答题