co 1 so keo muon chia thanh cac goi qua deu nhau, khi chia thanh goi 20 cai, goi 25 cai va goi 30 cai deu du 5 cai. Tinh so keo hien co. biet rang so keo lon hon 100 va nho hon 1600

GIUP TO NHE!

ban tam duoc 1/3 goi keo nho ban thang duoc 1/5 goi keo to nhu vay 2 ban co so keo = nhau biet goi keo to hon goi keon nho la 20 cai . tinh cai keo cua moi goi

Ban Tam duoc 1/3 tui keo nho,ban Thang duoc 1/5 goi keo to,nhu vay hai ban co so keo bang nhau,biet so keo o tui to nhieu hon so keo o tui nho la 20 cai keo.Hoi moi goi keo co bao nhieu cai?

Mot ban chia so keo trong 1 goi keo ra lam 3phan . phan 1 co 1/6 so keo trong goi , phan 2 co 1/3 so keo trong goi, biet so keo cua phan 3 it hon so keo hai phan dau la 2 cai . Hoi sau khi chia trong goi keo con thua ra may cai keo ?

Thang nay lop 6a1 xep thu nhat duoc thuong 2 goi keo va 3 goi banh .So keo moi goi la 30 cai , so banh moi goi la 45 cai.De chia deu so keo va banh thanh tung phan nho lam phan thuong do vui de hoc cuoi tuan sao cho so banh keo moi phan it nhat ,hoi chia duoc may phan ? 

biet\(\frac{4}{5}\) so keo trong mot goi keo la 16 cai hoi goi keo do co bao nhieu cai cai \(\frac{3}{10}\)so keo trong goi co mau do tinh so keo co mau do

co 10 cai keo,nguoi ta lay ra o moi goi 8cai keo thi thay rang so keo con laidung bang so keo cua 8 goi nguyen.hoi moi goi nguyen co bao nhieu cai keo

Cau 1 : Dat quyen sach len ban . Co nhung luc nao tac dung len no ?

Cau 2 : Co 3 qua can , nang lan luot la 50g , 30g , 100g o ben nay . Co 3 goi keo o ben kia . Tinh can nang 1 goi keo ?
Cau 3 : Cho  truoc mot cai dia , mot binh chia do , mot cai bat va mot hon da  , hon da do ko lot vua binh chia do . Hay neu cac buoc de do the tich hon da

Co 6 goi keo, so keo trong moi goi nhu nhau.Ban Mai lay ra o moi goi 10 cai keo thi thay so keocon laio 6 goi bang dung so keo o bon goi nguyen. Hoi moi goi co bao nhieu cai ke