问题 解答题
569+68+132+3138×25×42300-165-35125×(8+4)
3200÷25÷423×32+68×2325×20456×32-46×32.
答案

(1)569+68+132+31,

=(569+31)+(68+132),

=600+200,

=800;

(2)38×25×4,

=38×(25×4),

=38×100,

=3800;

(3)2300-165-35,

=2300-(165+35),

=2300-200,

=2100;

(4)125×(8+4),

=125×8+125×4,

=1000+500,

=1500;

(5)3200÷25÷4,

=3200÷(25×4),

=3200÷100,

=32;

(6)23×32+68×23,

=23×(32+68),

=23×100,

=2300;

(7)25×204,

=25×(200+4),

=25×200+25×4,

=5000+100,

=5100;

(8)56×32-46×32,

=(56-46)×32,

=10×32,

=320.

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