Tinh :
a) \(6\cdot\left(\dfrac{2}{3}\right)^3-3\left(-\dfrac{2}{3}\right)^2-2\left(-\dfrac{2}{3}\right)+5\)
a) \(\dfrac{\left(\dfrac{1}{2}\right)^2-\left(\dfrac{3}{2}\right)^3\cdot\left(\dfrac{1}{2}\right)^0}{5-2.2017^0}\)
bài 1: Tính
a) \(\dfrac{-5}{7}\) . \(\dfrac{2}{11}\) + \(\dfrac{-5}{7}\) . \(\dfrac{9}{11}\) + 1\(\dfrac{5}{7}\)
b) \(\dfrac{-3}{14}\) +\(\dfrac{5}{8}\) -\(\dfrac{1}{2}\)
c) ( \(\dfrac{1}{4}\) +\(\dfrac{-5}{13}\))+( \(\dfrac{2}{11}\) + \(\dfrac{-8}{13}\) + \(\dfrac{3}{4}\) )
d) ( \(\dfrac{21}{31}\) + \(\dfrac{-16}{7}\) )+( \(\dfrac{44}{53}\) +\(\dfrac{10}{31}\) )+\(\dfrac{9}{53}\)
e) \(\dfrac{1}{9}\) - \(\dfrac{5}{6}\) -4
___________
\(\dfrac{7}{12}\) - \(\dfrac{1}{36}\) -10
giúp em
bài 1: thực hiện phép tính:
a) \(\dfrac{-5}{12}\) . \(\dfrac{4}{19}\) +\(\dfrac{-7}{12}\) . \(\dfrac{4}{19}\) -\(\dfrac{40}{57}\)
b) \(\dfrac{1}{3}\) .\(\dfrac{4}{5}\) +\(\dfrac{1}{3}\).1.\(\dfrac{1}{5}\) +( \(\dfrac{-3}{2}\) )^2
giúp em
Đề cương ôn thi hết học kì 2.
1.NGHE HIỂU
Nghe và chọn đáp án đúng nhất trong số A,B hoặc C để hoàn thành câu.
1.Our class begins..........
A.4:05 B.4:15 C.4:50
2.My mother left this morning at..........
A.9:03 B.9:13 C.9:30
3.I am going to catch my bus at...........
A.3:40 B.4:20 C.12:04
4.Let`s get together at..........
A.12:05 B.5:12 C.5:22
5.The store closes today at.............
A.4:06 B5:45 C.6:15
6.The movie starts at..............
A.7:04 B.7:14 C.7:40
7.She called this morning at..............
A.10:00 B.10:05 C.10:10
8.Their plane arrives at................
A.11:05 B.4:12 C.11:45
9.Please come to my office at................
A.8:05 B.8:15 C.8:25
10.I have to work at..................
A.3:03 B.3:13 C.3: 30
3.ĐỌC HIỂU-VIẾT
BÀI 1:Viết lại các câu sao cho giữ nguyên nghĩa với câu cho trước.
1.She always cycles to work?
She always goes...............
2.She likes noodles very much.
Her favorite.......................
3.What is the price of these apples?
How much............................
4.the car is blue.
It is...................................
5.She is taller than her friend.
Of the two girls,she is......................
Các bn thi tốt nhé!
!
Bài 1: thực hiện phép tính:
c) ( \(\dfrac{-1}{2}\) )^3 : 1\(\dfrac{3}{8}\)-25%. (-6\(\dfrac{2}{11}\) )
giúp em
CMR \(A=\dfrac{n^3}{3}+\dfrac{n^5}{5}+\dfrac{7n}{15}\)ϵ Z với nϵZ
Tính tổng : A = 3 + 4 + 6 + 9 + 13 + 18 + 24 + .... + 4953
1.chuyen cac dong tu sau sang qua khu
1,stay 16 can
2.visit 17 read
3. get 18 tell
4. write 19.talk
5.take 20.walk
6.eat 21.go
7 have 23.teach
8.do 24.stop
9.play 25.make
10 drink 26.buy
11 see 27 be
12 give 28.move
13.return 29.cry
14.remember 30.sit
15.think 22.receive
first read out the words then fill in the blanks with "a","an"or"some"
1. some tea 2. ... elephant 3. ... box 4. ... house 5. ... onions 6. ... hour 7. ... cup 8. ... egg 9. ... union 10. ... plates 11. ... salt
12. ... eye 13. ... uncle 14. ... blouse 15. ... farmers 16. ... pepper 17. ... horse 18. ... water 19. ... money 20. ... milk