问题
解答题
计算下面各题,怎么简便就怎么计算
345+180+355+120
167+125+133+175.
答案
(1)345+180+355+120
=(345+355)+(180+120)
=700+300
=1000;
(2)167+125+133+175
=(167+133)+(125+175)
=300+300
=600.
计算下面各题,怎么简便就怎么计算
345+180+355+120
167+125+133+175.
(1)345+180+355+120
=(345+355)+(180+120)
=700+300
=1000;
(2)167+125+133+175
=(167+133)+(125+175)
=300+300
=600.