问题 解答题
简便计算并写出过程.
①125×32×25

②132×77+22×132+132
③1139-(350+139)④1170÷9÷13.
答案

①125×32×25,

=125×8×4×25,

=(125×8)×(4×25),

=1000×100,

=100000;

②132×77+22×132+132,

=132×(77+22+1),

=132×100,

=13200;

③1139-(350+139),

=1139-350-139,

=1139-139-350,

=1000-350,

=650;

④1170÷9÷13,

=1170÷(9×13),

=1170÷117,

=10.

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