1)trong mot phepnhan co thua so thu hai la 64, khi thuc hien phep nhan, ban Minh da viet cac tich rieng thang cot voi nbhau nen ket qua tim duoc la 870. tim tich dung cua phep nhan
2 ) Khi thuc hien phep nhan 983 voi 1 so co 3 chu so , ban binh da dat tich rieng thu 2 thang cot voi tich rieng thu 3 nen duoc ket qua la 70776 . Em hay tim thua so co 3 chu so chua biet trong phep nhan tren , biet chu so hang tram hon chu so hang chuc 1 don vi
giup minh voi , nghi mai ma khong ra