比较下列每组数的大小:
(1)-10,-7; (2)-3.5 ,1;
(3)-1/2,1/4; (4)-9,0;
(5) -5 ,3,-2.7 (6)3.8,-4.1,-3.9
(1)-10<-7 (2)-3.5<1 (3)-1/2<1/4
(4)-9<0 (5)-5<-2.7<3 (6)-4.1<-3.9<3.8