So sánh các số hữu tỉ sau bằng cách nhanh nhất a) -1/540 và 1/3780 b) 2003/-2004 c) 13/-92 và -29/202 d) -29/91 và -2929292929/9191919191

Không cần tính toán, điền ngay dấu < hoặc dấu> vào ô trống cho đúng:

a) -179/302 ... 0

b) 712/-832 ... 0

c) 785/-1121 .. 0

d -2305/154 ... 3/5

e) 1/-17 ... 0

f) -384/523 ... -5/-7

Bàn tay mang phép nhiệm mầu có ý nghĩa gì

chứng minh rằng 1/2+1/3+1/4+...+1/63>2

1.   . . . . . . . . . . . your jumper. It’s very hot in here.

    A. Take on                   B. Take off                C. Put on                  D. Put off

2. The classroom is empty. Everybody . . . . . . . . . . . home.

    A. has been                  B. is gone                 C. has gone               D. is been

3.  It . . . . . . . . . . . . . outside. Where’s my umbrella?

     A. rains                       B. is raining              C. is rain                   D. raining

4. What . . . . . . . . . . . . . .  next weekends?

    A. do you do               B. are you do           C. are you doing      D. you doing 

5. Where . . . . . . . . . . . . . . . . on Sundays?

    A. do you usually do    B. do you usually go    C. do usually do            D. do usually go

6. Peter  . . . . . . . . . morning exercise every morning.

    A. is                              B. do                        C. does                    D. doing

7. Mary and I.  . . . . . . . . . . . . .  to the cinema tonight.

    A. are going                B. goes                      C. are go                  D. go

8 . . . . . . . . . . . . . . . . . . . . a dictionary?

   A. Have you                  B. Do you                 C. Have you got       D. Do you got

9. Miss Isabel   . . . . . . . . . . . . . . in their school.

          A. is the best teacher                       B. the best teacher    

C. is the goodest teacher                               D. the goodest teacher

10. Ha Noi   . . . . . . . . . . . .  . . . . . . . HCM city.

   A. is farer than              B. is farther than                  C. farer than              D. farther than

CMR nếu ab=2.cd thì bcd chia hết cho 67

III.  Rearrange the following words to complete these sentences.

1. Hoa / with / small / in / brother / parents / house / lives / his / and / his / younger / a /

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

2. lunch / o’clock / going / it’s / and / the / twelve / we’re / to / room.

" It’s twelve o’clock and we’re going to lunch room.

3. police / on / street / front / the bank / the / is / Hang Bai / in / station / of.

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

4. family / have / because / like / all evening / Linh’s / a TV / they / talk / doesn’t / to

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

5. grows / he / my uncle / farmer / a lot of / is / a / vegetables / his farm / on / and

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

I. Choose the best answer among A,B,C or D. Write it in ‘Your answers’ part.

1. My sister is very fond.................... chocolate candy.

     A. of                            B. about                     C. with            D. at

2. Roy, her boyfriend is very handsome.

         A. good-looking             B. kind            C. friendly                  D. nice

3. ............................. book is this, yours or mine?

    A. What                         B. Which                   C. Whose                   D. Who’s

4. He looked very..................when I told him the news.

    A. happily                      B. was happy              C. happiness               D.  happy

5. One way to stop tooth decay is ................. less sugar.

         A. to eat              B. for eating               C. you eat                   D. you are eating

6. It’s five o’clock in the morning. Mr. Quang .................. the vegetables to the market.

   A. is taking                      B. takes                          C. taking                        D. is take

7. Would you like .......................  coffee, Peter ?

   A. any                             B. some                     C. a                            D. an

   8. Hoa prefers colorful dances in Thailand .............................shadow puppet shows in Indonesia.

      A. as                             B. than            C. to                          D. for

   9. Who is .................. actress in the world?

      A. more beautiful     B. most beautiful    C. the more beautiful        D. the most beautiful

10. Your house is bigger than ...................

   A.me                    B.my                                    C.mine           D. I

11. The boy looks a little bit thin ……………………….. he is strong.

   A. and                  B. for                       C. or                         D. but

12. Uncle Tom can’t see ………………….. without his glasses.

   A. badly               B. good                     C. clear                     D. well

13. Do you have any toothpaste? I’d like a big ………………….. .

   A. tin                               B. tube            C. bar                         D. can

14. She is not doing ……………… in the garden, just walking about.

   A. anything                      B. nothing                  C. something              D. somewhere

15. Don’t be late …………………….. your music lesson.

   A. on                               B. for                         C. at                           D. to

Tìm số có 5 chữ số khác nhau abcde sao cho abcd = ( 5e + 1²)

Tập hợp số tự nhiên n sao cho 4n-1026 chia hết cho 2n-1 là