Tim so co 3 chu so co tong cac chu so la 20 va ti so giua chu so hang tram voi chu so hang don vi la 2 , con chu so hang chuc bang chu so hang tram
tim so co 3 chu so co tong cac chu so la 20 va ti so giua chu so hang tram voi chu so hang don vi la 2, con chu so hang chuc bang voi chu so hang tram.
giai ro rang nhe
tim so co 3 chu so. Biet trung binh cong cua 3 chu so la 2 va chu so hang tram bang tong chu so hang chuc va hang don vi. Tim 3 chu so do ?
khi lay mot so tu nhien tru di mot so co 2 chu so, mot ban dat tinh nhu sau: chu so hang don vi cua so tru dat thang cot voi chu so hang chuc cua so bi tru va chu so hang chuc cua so tru dat thang cot voi chu so hang tram cua so bi tru va ket qua la 1154. Tim 2 so biet hieu dung la 432
cho mot so co 3 chu so:
chu so hang don vi hon chu so hang chuc la 2 don vi.
chu so hang chuc kem chu so hang tram la 1 don vi
hoi neu doi chu so hang don vi va hang tram cho nhau thi so da cho tang hay giam bao nhieu don vi
TIM MOT SO CO 3 CHU SO IET TRUNG BINH CONG 3 CHU SO CUA SO DO LA 6 BIET CHU SO HANG TRAM GAP 3 CHU SO HANG CHUC CHU SO HANG CHUC HON CHU SO HANG DON VI LA 3
tim 1 so co 3 chu so,biet tong 3 chu so la 20 ,chu so hang tram bang1/4 tong ba chu so chu so hang chuc gap ruoi chu so hang don vi
tim so co chu so biet trung binh cong cua 3 chu so bang 2 va chu so hang tram bang tong cac chu so hang chuc va hang don vi
tim 1 so co 4 chu so ,biet chunso hang tram gap doi chu so hang nghin ,chu so hang chuc gap doi chu so hang tram chu so hang don vi lon hon chu so hang chuc la 3