tu cac chu so 0,1,3,5 hay viet cac so thap phan be hon 1 ,moi so thap phan deu co ba chu so khac nhau . xep cac so do theo thu tu
tu lon den be;
tu be den lon ;
hay viet cac so thap phan be hon 1 ma trong moi so co ba chu so khac nhau o phan thap phan , gom cac chu so 1 , 2 , 3 . xep cac so theo thu tu tu be den lon
tim so thap phan lon hon 6 va be hon 7 biet rang so do co hai cho so khac o phan thap phan va tong cac chu so o phan thap phan bang chu so o phan nguyen
so cac so thap phan co 3 chu so o phan thap phan ma cac so do lon hon 10 va be hon 11
voi cac chu so 2,3,4 hay viet cac so thap phan co 3 chu so khac nhau , ma moi so co 2 chu so o phan thap phan . xep theo thu tu tu be den lon
hay viet nam so thap phan o giua 0 va 0,1 . xep cac so do theo thu tu tu be den lon
tong cua 1 so tu nhien va mot so thap phan=1994,34.bo dau phay cua so thap phan di ta duoc 1 so moi be hon so tu nhien 748 don vi .tim so thap phan ban dau
tim nam phan so thap phan vua lon hon 1\10 vua be hon 2\10
Tong cua 1 so thap phan va 1 so tu nhien la 1998,64 .Neu bo dau phay cua so thap phan do di ta duoc so moi lon hon so tu nhien 894 don vi . Tim so thap phan do