chữ số hàng đơn vị là:
(12-2):2=5
chữ số hàng chục là:
12-5=7
vậy số cần tìm là : 75
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Các câu hỏi tương tự
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 tu nhien co 4 chu so khac nhau lon hon 3142 ma co tong cac chu so bang 6 va chu so hang chuc be hon chu so hang don vi
viet so lot nhat co bon chu soma tong cac chu so bang 9,hieu chu so hang don vi va hang nghin la 5
BAI5 VIET SO LON NHAT CO BON CHU SO MA TONG CAC CHU SO BANG 9, HIEU CHU SO HANG DON VI VA HANG NGHIN LA 5
BAI 5 VIET CAC SO CO 4 CHU SO, BIET MO SO DUNG SAU HON CHU SO DUNG TRUOC 2 DON VI(VI DU :1357)VA SAP SAP CHUNG THEO THU TU TANG DAN.
Tim mot so co ba chu so biet trung binh cong cua ba so do bang 2va chu so hang tram bang tong cac chu so hang chuc va hang don vi
TIM SO CO BA CHU SO BIET TRUNG BINH CONG 3 SO DO BANG 3 ,CHU SO HANG DON VI GAP DOI TONG CAC CHU SO HANG TRAM VA HANG CHUC
hay tim cac so co 2 chu so ma tich cua chu so hang chuc va hang don vi bang 14
Tim mot so co ba chu so biet hieu giua chu so hang
tram va chu so hang don vi la so lon nhat co ba chu so,
chu so hang chuc kem chu so hang tram la 4.
so tu nhien có hai chu so hang chuc bang tich cua chu so hang don vi va 5 la