问题 解答题
简便计算
125×(3×8)
25×(80+8)178×101
99×3878×99+78125×37+63×125
32×125647×23-23×5471724+530-724.
答案

125×(3×8),

=125×8×3,

=1000×3,

=3000;

25×(80+8),

=25×80+25×8,

=2000+200,

=2200;

178×101,

=178×100+178,

=17978;

99×38,

=38×100-38,

=3800-38,

=3762;

78×99+78,

=78×100,

=7800;

125×37+63×125,

=125×(37+63),

=125×100,

=12500;

32×125,

=8×125×4,

=1000×4,

=4000;

647×23-23×547,

=(647-547)×23,

=100×23,

=2300;

1724+530-724,

=1724-724+530,

=1000+530,

=1530.

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