1. Tìm tất cả các số nguyên a biết : \(|a|\leq4\)

2. Tìm phân số có tử là 7 biết nó lớn hơn \(-\dfrac{9}{10} \) và nhỏ hơn \(-\dfrac{9}{11}\)

3. Tìm giá trị nhỏ nhất hoặc lớn nhất của các biểu thức sau :

\(A=|x+1|+5\)

\(B=\dfrac{x^2+15}{x^2+3}\)

1. Tìm giá trị n nguyên dương :

\(\dfrac{1}{8} . 16^n=2^n\)

2. Thực hiện phép tính :

\((\dfrac{1}{4.9}+\dfrac{1}{9.14}+\dfrac{1}{14.19}+...+\dfrac{1}{44.49}).\dfrac{1-3-5-7-...-49}{89}\)

3.a, Tìm x biết : \(|2x+3|=x+2\)

b, Tìm giá trị nhỏ nhất của \(A=|x-2006|+|2007-x|\) khi x thay đổi

Đặt câu hỏi cho phần in đậm .

1. When she left school , she worked as a waitress .

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

2. Peter spends thirty minutes jogging to the park each day .

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

3. I usually see him play tennis at the center court .

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

4. They rode their bikes to the cinema last night .

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

5. A stamp costs 5 thousand dong .

Rewrite the sentences so that it has the same meaning as the sentence printed before it . Write between 2-5 words .

1. She drinks more water than I do everyday .

I don't ....................................... she does .

2. Lat year I visited Paris with my family .

I went on a .................................. my family last year .

3. Why won't you come to the party next weekend .

Why won't ................................... the party next weekend ?

4. How heavy is your little daughter ?

How much does ......................................... ?

5. I can't play football . My sister can't play football .

Neither my sister ........................................... play football .

6. What awful weather today !

How ........................................... today !

7. Can you tell me where the bus stop is ?

Can you show ..................................... the bus stop ?

8. Our son is seven years old .

We ...................................... son .