so thap phan gom 3 chuc 6 don vi 5 phan muoi va 2 phan nghin dc viet la

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

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

Cac chu so phan muoi, phan tram, phan nghin cua mot so thap phan co 3 chu so o phan thap phan la 3 so le lien tiep . Tong cac chu so o phan thap phan bang phan nguyen cua so do, cac chu so o phan nguyen va phan thap phan deu khac nhau . Tim    so thap phan do ?

ba ban mai,thanh,linh co so tien la muoi lam nghin dong. hay tinh so tien cua moi nguoi biet rang mot phan tu so tien cua ban mai bang hai muoi phan tram s tien cua ban thanh va bang mot phan sau so tien cua ban linh

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.

2,034 gom ....don vi ,.........phan muoi,.........phan tram ..... phan nghin 

9 chuc,3 phan muoi, 5 phan nghin:         0,001:      7 don vi, 2phan tram 5phan nghin:

nam don vi va chin phan muoi

bon muoi tam don vi ; bay phan muoi va hai phan tram

ko don vi, hai phan tram

ko don vi,bon tram linh bon phan nghin

ko don vi nam phan nghin