问题 解答题
怎样简便就怎样算.
540÷(442-32×11)
250-250÷50125×88
653-219-81-5399×45+45325÷13×(276-250)
答案

(1)540÷(442-32×11),

=540÷(442-352),

=540÷90,

=6;

(2)250-250÷50,

=250-5,

=245;

(3)125×88,

=125×8×11,

=1000×11,

=11000;

(4)653-219-81-53,

=653-53-(219+81),

=600-300,

=300;

(5)99×45+45,

=(99+1)×45,

=100×45,

=4500;

(6)325÷13×(276-250),

=25×26,

=25×2×13,

=50×13,

=650.

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