2,Tìm số tự nhiên x biết

a, 50<2^n<100

b, 50<7^n<2500

1.So Sánh

a, 3 mũ 21 và 2 mũ 31

b, 202 mũ 303 và 303 mũ 202

2.Tìm số tự nhiên n biết

a, 50<2 mũ n<100

b,50<7 mũ n<2500

3.Chứng tỏ 8 mũ 8 + 2 mũ 2 chia hết cho 7

4.Tìm x

a, x mũ 15=x

b,(x mũ 5)mũ 10=x

Tính Thuận Tiện

a.19991999.1998-19981998.1999

b.(1374.57+687.86):(26.13+74.14)

bài 1 sửa lỗi sai

1.There is a temple old in our village

2.Physics are his favourite subject at school

3.He is going to his uncle;'s house by his car

4.Million people like his voice on television

5.He;'s waiting to the bus at the bus station

6.I don;'t have some oranges but I have some bananas

7.They want watch a soccer match at the moment

8.I;'m very thirsty.I;'d like some apple juice for drink

9.Sorry.You can;'t speak to my father now.He;'s have a bath

10.Nobody are here to help him

bài 2 điền từ thích hợp vào chỗ chấm

I have a very close frriend.Her name is Nga.She is twelve years old(1)............she is in grade six.She(2)..........speak English.She has English(3)............Tuesday and Friday.She can also(4).........the piano.In her room,(5)............is a piano and some books.Everyday she gets up at six.She(6)............breakfast at 6.30 and goes to school at a(7).......to seven.She has her (8)...........from seven to eleven thirty.Then she(9)..........home and has lunch at twelve.It is three o;'clock in the afternoon now.Nga is in her room.She is(10).........the piano

bài 3 đọc đoạn văn trả lời câu hỏi

Fishing is my favourite sport.I often fish hours without catching anything.But it doesnot worry me.Some fishermen are unlucky.Instead of catching fish,they often catch old boots and rubbish.I am even less lucky.I never catch anything-not even an old boot.I always go home with an empty bag.You must give up fishing my friends say.It is a waste of time.But they donot know one important thing I donot really likr fishing.I only want to sit in a boat and do nothing at all.

1.What is the write;'s favourite sport?

.........................................................

2.What do some fishermen often catch?

.........................................................

3.Is the writer lucky?

................................

4.What do the writer;'s friends often say to him?

...........................................................

5.What does the writer only want to do?

.......................................

bài 4.đọc đoạn văn và chọn đáp án đúng

Selina livé in a village in Africa.Her day starts at 4.She gets up and she walks three kilometers from the river.She collects some water,and she caries it back to her house.The water is very heavy.It isnot clean but there isnot any water in their village.Selina doesnot go to school.She cannot read or writer.She helps her mother with the housewowk.

1.Selina;'s house is three kilometers far from..............

A.the village B.the river C.the school D.school

2.The water is............

A.clean B.dirty C.not clean D.Both B and C

3.Selina cannot...........

A.go to shool B.read or write C.helps her mother with the housework

4.Selina gets up at.................

A.four B.five C.six D.three

5.Selina carries water back.............from the river

A.her home B.her house C.her school D.Both A and B

Bài.Viết câu hỏi cho phần gạch chân

1.The sovenir shop is in front of the book store. Gạch chân in front of the book store

2.We go to buy train

Gạch chân by train

3.I would like to buy some postcards

Gạch chân some postcards

4.She has English three times a week

Gạch chân three times a week

5.I went to Nha Trang last month.

Gạch chân last month

6.I buy a phone card because i want to call my parents

Gạch chân because i want to call my parents

Bài 2.Đọc đoạn văn và trả lời câu hỏi

Lan went to Nha Trang with her family on vacation last month.She stayed at a hotel on the side of the beach.In the early morning,she went to the sea and swam for an hour.Then she had breakfast in a foodstall on the beach to enjoy fresh air in the morning.In the afternoon,she took some photos of the sights.She stayed in Nha Trang for four days and took a lot of nice photos.She also bought some postcards and souvennir for her friends.It was a great vacation because she had a lot of fun.

1.Where did Lan go on vacation last month?

2.What did she do in the early morning?

3.What did she do in the afternoon?

4.How long did she stay in Nha Trang?

5.Why was her vacation great?

Bài 1:Tìm lỗi sai ở phần gạch chân trong mỗi câu sau và sửa lại cho đúng

1.There is tao big televisions in my livingroom

( Gạch chân is, big,in,ròm)

2.Jane isnot live in England.She lives in Australia.

(Gạch chân isnot,lives,in)

3.A house in the city is expesive than a house in the county

(Gạch chân a đầu tiên,in đầu tiên,expensive)

4.Peter will has a birthday party tomorrow

(Gạch chân Peter,has,birthday,tomorrow)

5.Would you like playing computer games?

(Gạch chân would,like ,playing,games)

một hình lập phương được tạo bởi 8 khối gỗ hình lập phương cạnh 1cm và môtụ hình lập phương khác được tạo bởi 27 khối gỗ hình lập phương trên cạnh 1cm.Hơi có thể xếp tất cả các khối gỗ của hai hình lập phương trên thành một hình lập phương mới không