bai 1: dat tinh roi tinh
a) 4725 : 15 = ?
4674 : 82 = ?
4935 : 44 = ?
b) 35136 : 18 =?
18408 :52 =?
17826 : 48 =?
bai 2 :
cu 25 vien gach hoa thi lat duoc 1m2 nen nha. Hoi neu dung het 1050 vien gach loai do thi lat duoc bao nhieu met vuong nen nha ?
bai 3 :
mot doi san xuat co 25 nguoi. Thang 1 doi do lam duoc 855 san pham, thang 2 lam duoc 920 san phamn, thang 3 lam duoc 1350 san pham. Hoi trong ca ba thang do trung binh moi nguoi cua doi lam duoc bao nhieu san pham ?