问题 解答题
用简便方法计算.
125×9×853×45+47×45(7+25)×4.
答案

(1)125×9×8

=125×8×9,

=1000×9,

=9000;

(2)53×45+47×45

=(53+47)×45,

=100×45,

=4500;

(3)(7+25)×4

=7×4+25×4,

=28+100,

=128.

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