问题 解答题
简便运算.
101×93
1230-347-45325×39+25
38×65-55×3887×8-8×12+25×825×32×125.
答案

(1)101×93,

=100×93+1×93,

=9300+93,

=9393;

(2)1230-347-453,

=1230-(347+453),

=1230-800,

=430;

(3)25×39+25,

=25×(39+1),

=25×40,

=1000;

(4)38×65-55×38,

=38×(65-55),

=38×10,

=380;

(5)87×8-8×12+25×8,

=8×(87-12+25),

=8×100,

=800;

(6)25×32×125,

=(25×4)×(8×125),

=100×1000,

=100000;

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