Bai 35 On Tap Do Luong

Bai 2 Tia So So Lien Truoc So Lien Sau

Bai 16 Lit

Bai 10 Luyen Tap Chung

Bai 27 Thuc Hanh Gap, Cat, Ghep, Xep Hinh, Ve Doan Thang

Bai 33 On Tap Phep Cong,phep Tru Trong Pham Vi 20,100

Bai 34 On Tap Hinh Phang

Bai 12 Bang Tru (qua10)

Bai 3 Cac Thanh Phan Cua Phep Cong Phep Tru

Bai 9 Bai Toan Ve Them Bot Mot So Don Vi

Bai 28 Luyen Tap Chung

Bai 14 Luyen Tap Chung