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nguyenkhanhduythcsml04052005
2 năm trước
Bài 3: Thực hiện phép tính ( Tính nhanh nếu có thể) a) -8.13.(-25).(-7) b) 5. (-2)' + 2. (- 6)-(- 14) c) -57.( 67- 34)-67.( 34 – 57) Bài 4 Tìm các cặp số nguyên (x; y) thỏa mãn xy +3x -y- 3 = 3 Bài 1: a) Sắp xếp các số nguyên sau theo thứ tự tăng dần: -2 ; -5 ; 3; -2014; 10; 1020; 0; -1 b) Bỏ dấu ngoặc trong biểu thức sau rồi thực hiện phép tính -21 - (-39 + 29 -21)
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