de kiem tra 1 5 phut dai so 7 chuong iv cuc hay 39563
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (38.75 KB, 3 trang )
Onthionline.net
Kiểm tra: Đại Số
Thời gian: 15’
Ngày tháng năm 2011
Trường THCS
Họ và tên:. . . . . . . . . . . . . . . . . .
Lớp: 7 C
Điểm
Lời phê
1.Viết bốn đơn thức đồng dạng với đơn thức -6,5x4y2
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
2.Cho các đơn thức : -1,5x3y2 ; 2,5x3y2 ; -3x3y2 ;
1 3 2
xy
3
a) Tính tổng các đơn thức trên ?
b) Tính giá trị của tổng các đơn thức trên tại x = - 1; y = 2.
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
3. Thu gọn và tìm bậc đơn thức :
1
3
a) 2xy3 (-3)x3y(- )xy2
1
3
b) -1,5xy2 (-3x3y)2 xy2
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
..............................................................................................................................................................................................................................................
Onthionline.net
....................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
......................................................................................................................................................................................................................................................
Onthionline.net
