Họ và tên: ................................................ Lớp: ....................................................... Điểm số: KIỂM TRA 45 PHÚT ĐẠI SỐ LỚP 7 CHƯƠNG 1 – Đề số 3 Đọc kỹ câu hỏi và thực hiện bài làm ngay trên tờ giấy này ( Không sử dụng tài liệu ) Câu 1 (4 điểm) : Thực hiện phép tính (tính hợp lý nếu có thể) a) 1 5 + 4 5 : 4 3 ; b) 23 + ( 1 3 )2 + ( 1 27 )0 ; c) ( 1 4 + −2 5 ) : 23 25 + ( 3 4 + −3 5 ) : 23 25 ; d) 35 . (−25)2 93 . 53 Câu 2 (5 điểm) : Tìm x, biết: a) x + 2 3 = 4 5 ; b) |𝑥 + 1| + 3 2 = 2 1 2 ; c) 20x : 5x = 64 ; d ) (0,5 – x)2 = 16 Câu 3 (1 điểm): So sánh (−7)90 và 3135 ......................................................................................................................................................................... ......................................................................................................................................................................... ......................................................................................................................................................................... ......................................................................................................................................................................... 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