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.

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

so thap phan co muoi chin don vi , tam muoi mot  phan tram

so thap phan co 2nghin;mot don vi ;sau phan tram viet la

a)so thap phan gom hai muoi tam don vi va ba muoi hai phan tram

b)hon so gom ba muoi chin don vi va nam phan muoi hai

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 

co hai so thap phan [moi so co ba chu so o phan nguyen ,mot chu so o phan thap phan]­ ma hieu la 326,2vi ngu gat nen sai 3 loi trong bai toan tru thanh cong bo dau phay cua phan thap phan va tang so hang tram o tren len 1 don vi nen co ket qua la 9192 tim hai so do

Cac chu so phan muoi , phan tram cua mot so thap phan co hai chu so o phan thap phan la hai so tu nhien lien tiep co tong bang 11. Tich cac chu so o phan thap phan bang phan nguyen cua so do.tim so thap phan do !

         Giai chi tiet ho minh nhe!