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Nguồn:
Người gửi: Trần Thủ Khoa
Ngày gửi: 16h:03' 01-04-2010
Dung lượng: 45.0 KB
Số lượt tải: 14
Nguồn:
Người gửi: Trần Thủ Khoa
Ngày gửi: 16h:03' 01-04-2010
Dung lượng: 45.0 KB
Số lượt tải: 14
Số lượt thích:
0 người
Trường THCS Ngoc Tố Thứ ........ngày .....tháng ..... năm 2010.
Lớp :............ Kiểm tra 45 phút.
Họ tên :.................................. Môn Toán: Số học .
Điểm
Lời phê của Thầy ( Cô)
Đề : I. Phần trắc nghiệm : ( 3 đ):
Khoanh tròn câu trả lời đúng nhất
Tổng của hai số nguyên âm là :
A Số tự nhiên B. Số 0 C. Số nguyên âm D. Số nguyên dương
2. Tích của hai số nguyên âm là :
A. Nhỏ hơn 0 B. Bằng 0 C . Lớn hơn 0
3 Kết quả phép tính 4.(-5) là
A. 20 B. -20 C. -9 D. 9
4 . Nếu x.y < 0 thì :
A. x và y cùng dấu B. x và y khác dấu
C. x < y C. x > y .
5. Kết quả sau khi bỏ dấu ngoặc của biểu thức : 34- ( 54 + 13 + 2) là
A. 34 – 54 + 13 -2 B. 24 – 54 – 13 + 2
C. 34 – 54 -13 – 2 D. 34 + 54 - 13 -2
6. Tích của hai số nguyên khác dấu .
A. là một số nguyên âm B. là một số nguyên dương
C. Số 0 D. Số tự nhiên .
II. Bài tập tự luận ( 7 đ) :
Bài 1 : ( 3 đ) : Tính: a. 25. ( -5 ) .4 .( -2) b. ( -326 ) – (115-326)
c . 35.67 + 167.( -35) d . 72. (28-49 ) + 28 .(49-72)
Bài 2 : (3đ) : Tìm số tự nhiên x :
a. 2x – 35 = 15 b . x + 60 = 25
c. 4x -64 = 16 c . 2x + 75 = 25
Bài 3 : (1 đ) : a). liệt kê và tính tổng : -8 < x < 8
b) liệt kê và tính tổng : -5 < x < 5
Bài làm
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Lớp :............ Kiểm tra 45 phút.
Họ tên :.................................. Môn Toán: Số học .
Điểm
Lời phê của Thầy ( Cô)
Đề : I. Phần trắc nghiệm : ( 3 đ):
Khoanh tròn câu trả lời đúng nhất
Tổng của hai số nguyên âm là :
A Số tự nhiên B. Số 0 C. Số nguyên âm D. Số nguyên dương
2. Tích của hai số nguyên âm là :
A. Nhỏ hơn 0 B. Bằng 0 C . Lớn hơn 0
3 Kết quả phép tính 4.(-5) là
A. 20 B. -20 C. -9 D. 9
4 . Nếu x.y < 0 thì :
A. x và y cùng dấu B. x và y khác dấu
C. x < y C. x > y .
5. Kết quả sau khi bỏ dấu ngoặc của biểu thức : 34- ( 54 + 13 + 2) là
A. 34 – 54 + 13 -2 B. 24 – 54 – 13 + 2
C. 34 – 54 -13 – 2 D. 34 + 54 - 13 -2
6. Tích của hai số nguyên khác dấu .
A. là một số nguyên âm B. là một số nguyên dương
C. Số 0 D. Số tự nhiên .
II. Bài tập tự luận ( 7 đ) :
Bài 1 : ( 3 đ) : Tính: a. 25. ( -5 ) .4 .( -2) b. ( -326 ) – (115-326)
c . 35.67 + 167.( -35) d . 72. (28-49 ) + 28 .(49-72)
Bài 2 : (3đ) : Tìm số tự nhiên x :
a. 2x – 35 = 15 b . x + 60 = 25
c. 4x -64 = 16 c . 2x + 75 = 25
Bài 3 : (1 đ) : a). liệt kê và tính tổng : -8 < x < 8
b) liệt kê và tính tổng : -5 < x < 5
Bài làm
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