问题 解答题

用递等式计算.(你认为怎样简便就怎样算)

(1)1000-8×322÷23

(2)786-(286-177)

(3)704十(120-3250÷125)

(4)48×52十52×52

(5)32×125×25

(6)999×1001.

答案

(1)1000-8×322÷23,

=1000-2576÷23,

=1000-112,

=888;

(2)786-(286-177),

=786-286+177,

=500+177,

=677;

(3)704十(120-3250÷125),

=704+(120-26),

=704+94,

=798;

(4)48×52十52×52,

=(48+52)×52,

=100×52,

=5200;

(5)32×125×25,

=(4×8)×125×25,

=(4×25)×(8×125),

=100×1000,

=100000;

(6)999×1001,

=999×(1000+1),

=999×1000+999×1,

=999000+999,

=999999.

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