Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Bài tập 3 (Trang 7 / SBT Toán 6 - tập 1 / Chân trời sáng tạo) Cho M là tập hợp các chữ cái tiếng Việt có mặt trong từ "NHA TRANG". Trong các khẳng định sau, khẳng định nào là đúng?
(A) N ∉ M
(B) U ∈ M
(C) T ∈ M
(D) Q ∈ M
1.1.goes
2. Are you writting
3.haven't cleaned
2.1 Where are they planting the tree ?
2. When will she visit hanoi ?
3. When does she often watch TV ?
4.How often do you go to school ?
5. How are all the buildings in London ?
6. What is the weather in sweden in winter ?
7.Where was your father last month ?
8. Why did she go to the doctor ?
9. What time did Nam leave home yesterday ?
10. Where will be your future house ?
11. How often does she go to the fitness center ?
12. When did they join the environment project ?
13. What subject does your class have on monday ?
14. Where will you travel by a super carr ?
a, Có bằng nhau
b, Không bằng nhau
c, Có bằng nhau
d, Không bằng nhau
e, Không bằng nhau
a) 3/4 và 6/8
Ta có 3 . 8 = 4 . 6
=> 3/4 = 6/8
b) -4/5 và 8/-9
Ta có : -4 . ( -9 ) \(\ne\)8 . 5
=> -4/5 \(\ne\)8/-9
c) 10/14 và -15/-21
Ta có : 10/14 = 5/7 ; -15/-21 = 5/7
=> 10/14 = -15/-21
d) -4/7 và 4/7
Ta có : -4 < 4
=> -4/7 \(\ne\)4/7
e) 6/15 và -8/20
Ta có : 6/15 = 2/5 ; -8/20 = -2/5
=> 6/15 = -8/20
* Cái này \(\ne\)bạn tạm hiểu là " không bằng nhé :v Thực ra nó là " khác " *
a) ab - ba = ( 10a + b ) - ( 10b + a ) = 10a + b - 10b - a = ( 10a - a ) + ( b - 10b ) = 9a - 9b = 9( a - b ) chia hết cho 9
=> ab - ba chia hết cho 9
b) abcabc = abc . 1001 = abc . ( 7 . 13 . 11 ) chia hết cho 11
=> abcabc chia hết cho 11
c) aaa = a . 111 = a . ( 3 . 37 ) chia hết cho 37
=> aaa chia hết cho 37
Câu 1: (3 điểm)Thực hiện phép tính:
a) 17 – 25 = -8
b) 55 – 17 = 38
c) (-15) + (-122) = -137
d) ( 7 – 10) + 3 = -3 + 3 = 0
e) 25 – (-75) + 32-(32+75) = 25 + 75 +32 - 107 = 25
f) (-5).8. (-2).3 = (-40).(-6) = 240
Bài 1
a. 17-25=-8
b.55-17=38
c. (-15)+(-122)
=-(15+122)
=-137
d.(7-10)+3
=-3+3
=0
e. 25-(-75)+32-(32+75)
=25+75+32-32-75
=25+(75-75)+(32-32)
=25
f. (-5).8.(-2).3
=\(\left[\left(-5\right).\left(-2\right)\right].\left(8.3\right)\)
=10.24
=240
1.D
2.B
3.A
4.D
5.B
6.D
7.C
8.A
9.B
10.D
11.B
12.B
13.A
14.B
15.A
16.C
17.A
18.B
19.D
20.B
1. The Great Wall of China is the world’s longer => longest structure.
A B C D
2. Traveling by tram is most => more convenient than traveling by car in this city.
A B C D
3. You must taking=> take off your shoes before entering this room.
A B C D
4. Do you think there is another mountain highest => higher than Mount Everest?
A B C D
5. Ha Long Bay is the more => most beautiful natural wonder of Viet Nam.
A B C D
6. The scenery of the Amazon rainforest in your pictures looks incredibly=> incredible.
A B C D
7. In my opinion, foreign tourists visit Hoi An just to => forits ancient houses.
A B C D
8. Missouri is longer => the longest river in the USA, but it is shorter than the Amazon.
A B C D
9. Meghalaya in India has more => the most rainy or wettest weather in the world.
A B C D
10. Lang Son is one of the coldest province => provinces in North Viet Nam.
A B C D
11. You mustn’t cheat in exams because the teacher will punish you when => if you do that.
A B C D
12. I’m so worried because I mustn’t => must be at home after school right now.
A B C D
13. It is more => the most interesting book I have ever read.
A B C D
14. What’s the better => most film you have ever seen?
A B C D
15. You mustn’t => must look after the house when your parents are away
A B C D
16. It is raining heavily outside. You shouldn't => should bring your raincoat.
A B C D
17. She always give => gives presents to her parents on Tet holiday.
A B C D
18. She will helps => help her mother decorate the house before Tet.
A B C D
19. I don't think that lucky money can bring us good => both good and bad luck.
A B C D
20. The New Year Festival in Thailand is on => inApril. It is very hot.
A B C D