问题 解答题
用简便的方法计算下面各题.
25×125×4
25×(4+2)124×25-25×2425×24.
答案

(1)25×125×4,

=125×(25×4),

=125×100,

=12500;

(2)25×(4+2),

=25×4+25×2,

=100+50,

=150;

(3)124×25-25×24,

=(124-24)×25,

=100×25,

=2500;

(4)25×24,

=(25×4)×6,

=100×6,

=600.

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