Kiểm tra 1 tiết lần 1 môn:đại số lớp 7

TRƯỜNGTHCS TRẦN CAO VÂN KIỂM TRA 1 TIẾT LẦN 1
TỔ KHOA HỌC TỰ NHIÊN I Môn:ĐẠI SỐ Lớp 7
(Học sinh làm bài trên tờ đề này) Ngày kiểm tra...../...../200..
Họ và tên học sinh.......................................................Lớp 7/....
ĐỀ CHÍNH THỨC ĐỀ SỐ 1
I/Trắc nghiệm(2 điểm)
Hãy khoanh tròn chữ cái đứng trước câu đúng nhất
Câu1:│x│=5/2 thì:
a/x=5/2 b/x=-5/2 c/x=5/2 hoặc x=-5/2 d/Không có giá trị nào
Câu2:Xm.Xn bằng
a/Xm.n b/Xm+n c/(Xm)n d/(X.X)m.n
Câu3:Nếu √x =3 thì x2 bằng:
a/3 b/9 c/81 d/Một kết quả khác
Câu4:Từ tỉ lệ thức a/b=c/d (với a,b,c,d≠0) ta có thể suy ra
a/ a/c=d/b b/ a/b=d/c c/ d/b =c/a d/ a/d=b/c
II/Tự luận (8điểm):
Bài1 Tính:
a/ 2/5 +5/7 :15/14 -11/15
b/ 6-3.(1/3)3
Bài2:Tìm x biết:
3x/4+5/6 =7/12
Bài3:Tổng số học sinh giỏi và khá của một lớp là 22 em.Hỏi có bao nhiêu học sinh 
giỏi ,bao nhiêu học sinh khá .Biết 4/5 số học sinh giỏi bằng 2/3 số học sinh khá
Bài4:So sánh 4300 và 8200
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. . .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

TRƯỜNGTHCS TRẦN CAO VÂN KIỂM TRA 1 TIẾT LẦN 1
TỔ KHOA HỌC TỰ NHIÊN I Môn:ĐẠI SỐ Lớp 7
(Học sinh làm bài trên tờ đề này) Ngày kiểm tra...../...../200..
Họ và tên học sinh.......................................................Lớp 7/....
ĐỀ CHÍNH THỨC ĐỀ SỐ 2
I/Trắc nghiệm(2 điểm)
Hãy khoanh tròn chữ cái đứng trước câu trả lời đúng nhất
Câu1:Nếu │x│=15 thì x bằng:
a/x=15 b/x=-15 c/x=± 15 d/Không có giá trị nào
Câu2:Nếu a.d=b.c thì:
a/ a/b=d/c b/ d/b=c/a c/ c/d=b/a d/ b/c =d/a
Câu3:√25 bằng
a/25 b/5 c/-5 d/±5
Câu4:22.24.23 bằng
a/29 b/49 c/89 d/824
II/Tự luận(8điểm):
Bài1:Thực hiện phép tính (Bằng cách hợp lí nếu có thể)
a/ 0,25.(-15,8):(-4)
b/ b/ 6-3.(-1/3)3
c/61/4:(-5/7)-101/4:(-5/7)
d/(10/3+2,5):(19/6-21/5)-11/30
Bài2:Tìm x biết:
5x/2-8/3=-11/3
Bài3:Tổng số học sinh giỏi và khá của một lớp là 25 em .Hỏi có bao nhiêu học sinh giỏi,bao nhiêu học sinh khá.Biết rằng số học sinh giỏi bằng1/4 số học sinh khá
Bài4:Tìm y thuộc Q biết 8y+3 =512

.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. . .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. .
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
..........................................................................................................................................................................................................................................................................................................................................