问题 解答题
简便计算.
101×7825×8899×76+76
5×38×4×5(25+20)×4     35×103-3×35.
答案

(1)101×78,

=(100+1)×78,

=100×78+78,

=7800+78,

=7878;

(2)25×88,

=25×(4×22),

=(25×4)×22,

=100×22,

=2200;

(3)99×76+76,

=(99+1)×76,

=100×76,

=7600;

(4)5×38×4×5,

=(5×5×4)×38,

=100×38,

=3800;

(5)(25+20)×4,

=25×4+20×4,

=100+80,

=180;

(6)35×103-3×35,

=(103-3)×35,

=100×35,

=3500.

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