Gọi a là số bé, b là số lớn, ta có:

a + b = 102 ; a0 + b = a x 10 + b = 417.

=> 10a + b - (a + b) = 315

=> 10a + b - a - b = 315 => (10a - a) + (b - b) =315

=> 9a = 315 => a=35 => b= 102 - 35 = 67.

Vậy số lớn là 67.

*Answer the questions:

1/ where was Nam on his last summer holiday?

He was in Hanoi, the capital of Vietnam.

2/ How long did he stay in Hanoi?

He stayed at his uncle house for three weeks.

3/ Where did he visit there?

He visited a lot of interesting places such as Uncle Ho's Mausolium, Ba Dinh Spuare, West Lake, Lenin Park.

Write true (T) or false (F):

1/ Nam visited many interesting places in Hanoi.T

2/ Nam didn't stay at his uncle house.F(He stayed at his uncle house)

*Do as dorected in parentheses

1/ Hoa was absent from class yesterday because he had a bad cold

Why was Hoa absent from class yesterday?

2/ They arrived home in the evening .

3/ They were happy with their life.

Were they happy with their life?

4/ You must brush your teeth ( regular )

You must brush your teeth regularly.

I. USE OF ENGLISH:

* Pick out the word whose underlined part is pronounced ifferent from that of the other:

1/ D) missed

2/ C) bougth

* Choose the correct answer among A, B, C ỏ D to complete the following sentences:

1/ Nam ..... to the cinema last Sunday.

A) gose B) went C) go D) to go

2/ She ..... very happy yesterday.

A) is B) are C) were D) was

3/ Minh usually ..... voleyball after school.

A) plays B) play C) to play D) playes

4/ She talked to her friends ..... her vacation in Da Lat.

A) about B) on C) with D) in

5/ Did Liz buy any ..... in Nha Trang?

A) cap B) picture C) gifts D) souvenir

6/ She looks tired. What's the ...... with her?

A) happen B) matter C) wrong D) of

7/ Are you scared ..... seeing the dentist?

A) on B) in C) at D) of

8/ I need ..... ..... your height.

A) measuring B) measure C) to measure D) happens