so sanh cac day phan so 1/2,-2/3,3/4,-4/5 22/10/2021 Bởi Alaia so sanh cac day phan so 1/2,-2/3,3/4,-4/5
1/2=30/60 -2/3=-20/60 3/4=45/60 -4/5=-48/60 vì -48/60<-20/60<30/60<45/60 (-48<-20<30<45) vậy -4/5<-2/3<1/2<3/4 Bình luận
1/2=1:2=0,5
2/3=2:3=0,66
3/4=3:4=0,75
4/5=4:5=0,8
Vậy:0,5<0,66<0,75<0,8
Là:1/2<2/3<3/4<4/5
1/2=30/60
-2/3=-20/60
3/4=45/60
-4/5=-48/60
vì -48/60<-20/60<30/60<45/60 (-48<-20<30<45)
vậy -4/5<-2/3<1/2<3/4