ba don vi,chin phan muoi

bay chuc , hai don vi , nam phan muoi, bon phan tram

hai tram, tam chuc, chin phan muoi, bay phan tram, nam phan nghin

mot tram,hai don vi,bon phan muoi,mot phan tram,sau phan nghin      ( viet so thap phan)

chuyen so thap phan thanh hon so co chua phan so thap phan;

7,9 ; 12,35;  8,06; 72,308;  20,006.

Tong cua mot so tu nhien va mot so thap phan bang 1994,34 bo dau phay ben phan thap phan ta duoc so mot be hon so tu nhien 748 don vi vay so thap phan la

Ta da biet : trong he so ghi so thap phan ,cu muoi don vi o mot hang thi lam mot trong muoi gia tri : 

So abcd trong he thap phan co gia tri bang :

a.10^3+b.10^2+c.10+d 

Co mot he so cu hai don vi o mot hang thi lam thanh mot don vi o hang tren lien truoc do la he nhi phan moi chu  trong he hai gia tri nhi phan chang han abcd ,mot trong hai gia tri 0va 1 mot so trong he thap phan  chang han abcd duoc ki hieu abcd 

tong cua mot so tu nhien va mot so thap phan bang 1994,34 neu dau phay cua so thap phan di ta duoc mot so moi be hon so tu nhien 74,8 don vi tinh so thap phan do

khi chuyen dau phay cua mot so thap phan C sang phai mot chu so so do tang them 175.05 don vi tim so thap phan C

1)Viet cac so do sau duoi dang phan so thap phan co :

a) Ten don vi la met

57m, 454dm, 6789cm, 3dm 5cm 7mm

2) Viet so thap phan co :

a) Nam muoi lam don vi,nam phan muoi,nam phan tram,nam phan nghin

b) Hai nghin khong tram linh hai don vi,tam phan tram

c) Khong don vi,mot phan nghin

So thap phan co 90 don vi , tam muoi mot phan tram la so .....

Khi doi dau phay cua mot so thap phan sang ben phai mot chu so .thi so do tang len 8.1 don vi tim so thap phan ban dau

1) Viet cac so do sau duoi dang so thap phan co :

Ten don vi la met 

57mm , 454dm , 6789cm , 3dm 5cm 7mm

2) Viet so thap phan co :

a. Nam muoi lam don vi , Nam phan muoi  , nam phan tram , nam phan nghin

b. Hai nghin khong tram linh hai don vi , tam phan tram

c. Khong don vi , mot phan nghin