Tim mot so neu lay so do tru di so lon nhat co bon chu so va co tong cac chu so bang 30  thi duoc so be nhat co 5 chu so

so lon nhat co 3 chu so ma tich cua 3 chu so do bang 60

CHO SO CO 4 CHU SO KHAC NHAU TRONG DO TICH CUA CHU SO HANG NGHION VA HANG DON VI BANG 36 , TICH CUA CHU SO HANG TRAM VA HANG CHUC BANG 35

A.TIM CAC CHU SO CUA SO DO 

B.VIET SO LON NHAT VA SO BE NHAT CO BON CHU SO DO

CACH LAM NUA NHA... GIUP TO VOI NHA

Tinh dien tich cua 1 mieng bia hinh vuong, biet canh hinh vuong bang chieu rong cua hinh chu nhat co chu vi bang 6dm 8cm, chieu dai hinh chu nhat co so xang - ti - met bang tich cua so tu nhien lon nhat co 1 chu so nhan voi 3

Tim tich cua so be nhat co 3 chu so khac nhau va so lon nhat co mot chu so?

tim hieu cua so lon nhat co 3 chu so co tong cac chu so la 17 va so be nhat co 3 chu so co tong cac chu so bang 17

bai 12:Mot vuon co so cay buoi bang 1phan2 cay cam,biet so cay cam bang so chan lon nhat co 3 chu so.Hoivuon do co tat ca bao nhieu cay buoi va cam?

bai 13:tim tich cua so nho nhatco ba chu so khac nhau voi so chan lon nhat co mot chu so.

bai 14:tim mot so,biet rang giam so do di 5 lan sau do them 10 don vi thi duoc so le nho nhat co hai chu so.

bai 15:tim mot so biet rang neu gap so do len 4 lan,duoc bao nhieu lai gap len 6 lan thi duoc 360.

viet so lon nhat co bon chu so ma tong cac chu so bang 9 ,hieu chu  so hang don vi  va hang don  vi va hang nghin la 5

tim so co hai chu so sao cho tich 2 la so chan lon nhat co 1 chu so va chu so lon gap 2 lan chu so be