a,Viet so thap phan duoi dang ti so phan tram:
0,24= 0,009= 4,1= 12,5=
b,Viet ti so phan tram duoi dang so thap phan;
94%= 7%= 128%=
c,Viet theo mau:25%=25/100=1/4
45%= 125%=
2.Viet cac so do sau duoi dang so thap phan:
a, 2/5gio= 2 3/4gio=Luu y day la hon so
b,1/25kg= 11/100km=
3.Viet so thap phan thich hop vao cho cham sao cho:
a,0,8<.....<0,9 b,0,03<...<0,04
c,1,34<...<1,35 d,2,3221<...<2,322