user-avatar
833566217403224
2 năm trước
Bài 1: Thực hiện phép tính ( Tính nhanh nếu có thể) a. 5.(–8).( –2).(–3) b. 4.(–5) ²+ 2.(–5) – 20 c. 27.(15 –12) – 15.(27 –12) d. 1 - 2 + 3 - 4 + 5 - 6+ ... + 199 - 200 Bài 2: Tìm x  Z , biết: a. 11 + (15 – x) = 1 b. 2x – 35 = 15 Bài 3: Tìm số nguyên n thỏa mãn 2n + 1 chia hết cho n-2
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Choose the best answer. 1.____________ you like a cup of tea? Yes, please. a. Could b. Do c. Would d. Will 2.My brother is studying very ___________. a. hardly b. hard c. good d. harder 3. Would you _______ cleaning the floor for me? a. like b. please c. mind d. rather 4. It is difficult ________ all these things. a.to remember b. remembering c. remember d. remembered 5. Motorbikes _______ in China are cheap. a. make b. made c. makes d. making 6. ________you mind if I smoked? a. Could b. Don’t c. Do d. Would 7. John is interested ____ the history of Vietnam. a. in b. with c. to d. on 8. Milk bottles can be _________ after being cleaned. a. recycled b. thrown away c. broken d. refilled 9. ____________ you show me the way to the nearest post office, please? a.. Can b.. Could c.. Do d.. Both A & B are correct 10.Ba loves watching football, ____________ he doesn’t like playing it. a. and b. but c. so d. because 11. I enjoyed listening ____________ the radio when I was a child. a. to b. on c. up d. at 12. The girl sitting ____________ my father and Michael is my little sister. a. on b. next c. between d. in 13. In Britain, people drive __________ the left ____________ the street. a. at / in b. to / of c. in / in d. in / of 14. She used to ____________ part in social activities. a. take b. taking c. took d. takes 15. Can we ___________ at your house and go to the party together? a. meet b. come c. see d. find

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team