Kiểm tra chương 1 môn: Đại số 7

Trường THCS Ngọc Thanh Họ và tên:……………………………………………........................ Lớp: 9 .................. KIỂM TRA CHƯƠNG 1 Môn: Đại số Điểm Lời phê của giáo viên Trác nghiệm: (3 điểm) Hãy khoanh tròn vào chữ cái đứng trước câu trả lời đúng Câu1 : Biểu thức xác định khi: A. B. C. D. Câu 2: Kết quả phép tính là: A. -5 B. 2 C. 3 D. 6 Câu 3: Kết quả phép tính là: A. 6 B. -6 C. -36 D. 36 Câu 4: Kết quả phép tínhlà: A. 0 B. -2 C. D. Câu 5: Kết quả phép tính là: A. B. C. D. Câu 6: Kết quả rút gọn của biểu thức là: A. B. 1 C. -4 D. 4 Tự luận (7 điểm) Câu 7: Rút gọn biểu thức a. b. Câu 8: Tìm biết a. b. Câu 9: Cho biểu thức Tìm điều kiện để A xác định Rút gọn A Tìm để 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