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.