user-avatar
hoannguyen02122001
2 năm trước
II. TỰ LUẬN : Câu 1 (2 điểm) Thực hiện phép tính một cách hợp lý: a/ 53.(–15) + (–15).47 b/ –(2789 – 435) + (1789 – 1435) Câu 2 (3 điểm) Tìm x Z biết: a/ –7x = 42 b/ 3x – (–5) = 8 c/ –3x + 8 = – 7 d/ – 10 = – 3 Câu 3 (1,5 điểm) Điền chữ số thích hợp vào chữ cái a,b để được Câu 4 (0,5 điểm) Tìm giá trị lớn nhất của: A = – – 7
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Choose the best answer to complete each of the following sentences. 1. There are two main kinds of sports: team sports and ____ sport s. A. individual B. separate C. competitive D. popular 2. Football is the ___ sport in the world. It is considered “the king sport”. A. more popular B. popularer C. most popular D. populares 3. It is ______ to skate there because the lake has just been frozen. A. dangerous B. safe C. popular D. interesting 4. This river is not ______ enough for children to swim in. A. clear B. clean C. polluted D. cold 5. We took part _______ a running race last summer and won the first prize. A. on B. at C. about D. in 6. _________ is one of the most ancient of all sports. A. Horse racing B. Racing horse C. Race horse D. Horse race 7. After school, we _____ basketball or badminton. A. play B. do C. go D, make 8. Hoang looks so cool. He always wears ______ clothes. A. sporty B. sport C. usual D. uniform 9. People usually do ______ with the music. A. karate B. volleyball C. Judo D. aerobics 10. There are over one hundred _______ taking part in this competition. A. person B. student C. competitors D. player

1. David had gone home before we arrived. -> After ……………………………………………………………………………………. 2. The light had gone out before we got out of the office. -> When……………………………………………………………………………………. 4. After my father had watered all the plants in the garden , my mother came home. -> Before …………………………………………………………………………… 5. There was a loud noise next to my door last night, so I couldn’t sleep. -> Because............................................................................................................................ 6. Because it rained heavily, the roads are flooded. (due to) ->................................................................................................................................................. 7. Eating too much sugar can result in health problems. (lead to) -> .............................................................................................................................................. 9. The factory is located near our village. There is air pollution and noise pollution. -> If ………………………………………………………………………………………………….. 10.The local people have to use water from the polluted river.They don’t have fresh water. -> If …………………………………………………………………………………………………. 11.People throw rubbish in the street.The street doesn’t look attractive. -> .If....................................................................................................................................................... 12. Tornadoes can move objects as big as a car. → Objects…………………………………… 13. People have played chess for around two thousand years. -> Chess............................................................................................................................. 14. They took residents of flooded villages to a safe place las tnight -> Residents of flooded villages.........................................................................................................

I. TRẮC NGHIỆM A/ Chọn đáp án đúng nhất và điền chữ cái đứng trước vào bảng bên dưới (2đ) 1.Bỏ dấu ngoặc biểu thức (–5 + 3) – (–6 – 9) ta được: A/5 + 3 + 6 + 9 B/–5 + 3 + 6 – 9 C/–5 + 3 – 6 + 9 D/–5 + 3 + 6 +9 2.Nếu tích a.b > 0 thì: A/a < 0; b > 0 B/ a và b cùng dấu C/ a và b trái dấu D/ a>0; b < 0 3.Kết quả của phép tính (–16) + là: A/30 B/–30 C/2 D/–2 4.Tập hợp các số nguyên là ước của 8 là: A/{1;2;4;8;0; 0;–1;–2;–4;–8} B/{1;2;4;8} C/{–1; –2; –4;–8} D/{1;2;4;8; –1;–2;–4;–8} 5.Kết quả của phép tính (–19) + (–513) là: A/–532 B/532 C/522 D/–522 6.Tổng của các số nguyên x sao cho –5< x < 4 là: A/0 B/–5 C/–4 D/–9 7.Kết luận nào sau đây là đúng? A/–(–2)= –2 B/–(–2) = 2 C/– = 2 D/– =2 8.Kết quả nào sau đây là sai? A/4.( –5) =–20 B/(–2).( –2).( –5)= –20 C/–4.( –5)= –20 D/–2.2.(–5)=20 B. Điền dấu <; >; = vào chỗ trống sao cho thích hợp (1đ) 9.(–20)3 … (20)3 10. 0 … (–24).( –19).(-1)10 11.(–3)4.(-5)2 … (3)4.(–5)2.(–1)100 12.(–2016).( –2017) … (–2016).(2017)

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