问题 解答题
下面各题怎样简便就怎样算.
25×7×432+26+74+16863×25+25×37
99×32+3225×4448×213-13×48.
答案

(1)25×7×4,

=25×4×7,

=100×7,

=700;

(2)32+26+74+168,

=(32+168)+(26+74),

=200+100,

=300;

(3)63×25+25×37,

=25×(63+37),

=25×100,

=2500;

(4)99×32+32,

=(99+1)×32,

=100×32,

=3200;

(5)25×44,

=25×4×11,

=100×11,

=1100;

(6)48×213-13×48,

=48×(213-13),

=48×200,

=9600.

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