1 Cho n(n+1) là tích 2 số tự nhiên liên tiếp thì chia hết cho 2 .

Chứng minh: a, 3n mũ 2 + n chia hết

b, (4n mũ 2 + 4n ) + 8n + 16 chia hết 8

2 , Chứng minh:C = 1 + 3 + 3 mũ 2 + 3 mũ 3 + .........+ 3 mũ 11 chia hết 13

3 , Tìm số dư của : a, 2004 mũ 2004 khi chia cho 11

b, 776 mũ 776 + 777 mũ 777 + 778 mũ 778 khi chia cho 3 , 5

4 , Chứng minh : 9 mũ 2002 - 1 chia hết 18

5 , Chứng minh : 7 mũ 214 - 4 chia hết 3

6 , Chứng minh : 4 mũ 200 + 3 mũ 1002 chia hết 13

I. Make questions for the answer ( Đặt câu hỏi cho câu trả lời)

1. ...............................- I swim.

2. ...............................- She does aerobics

3. ...............................- My brother plays table tennis

4. ...............................- They are skipping

5. ...............................- She is jogging

6. ...............................- He goes fishing in his free time

7. ...............................- Mai watch TV in her free time

8. ...............................- I play badminton twice a week

9. ...............................- Hoa listen to music three times a week

10...............................- I never go to the movie theater

II. Compelete the sentences using given words

1 How much / be / a dozen eggs ?

2 How much /these apples / cost ?

3 How much / be / those boxes / chocolate ?

4 How much / that book / cost

5 How much / be / that pen ?

6 How much / toothpaste / we / need ?

7 How much / rice / she like ?

8 How many / apple / you / want ?

9 How many / kilo / fish / she / want ?

10 How many / box / candy / chilren / like ?

11 They / need / hafl / kilo / meat

12 She / want / 500 grams / lettuce

13 Linh / want / a / litter / milk

14 Mr.Kiên / need / a / packet / tea

15 . Hoa / need / 2 / box / chocolate

III. Đặt câu hỏi cho từ nghiêng

1. She usually does aerobics - ............................

2.He plays tennis in his free time-

3.She go jogging twice a week -

4.I go fishing once a week-

5.He listen to music in his free time -

6.They are watching TV now -

7.I play badminton -

8.I play table tennis in my free time -

9 .He is playing video game at the moment -

10.We go to the movie three time a week -

11.I am never lake for school -

12.I go fishing with my brother -

13.He likes walking in the mountains -

14.She plays tennis on the weekend -

I . Hoàn thành câu thứ 2 sao cho câu có cùng nghĩa với câu đã cho

1. The car is red - It .........................

2. Lan and Mai often walk to school every morning - Lan and Mai often ...........................

3. What about taking some photos ? - Why ...................

II. Comparative and Superlative of adjective

1. Minh/short/Lan

2. No one in the class/tall/Alison

3. These books / new / those books.

4. This ruler / not / long / that pen

5. Iron / useful / gold

6. Ho Chi Minh City / big city in Viet Nam

7. Tai / fat student / in his class

III. Comepelete the sentences

1. He / swim / every day

2. Ba / jog / every day ?

3. Mai / play badminton / every afternoon

4. The children / play volleyall / the moment

5. She / often / do aerobics / her free time

6. Nam / sometimes / play table tennis

7. My father / play tennis / hís free time

8. His friends / swim / now

9. He feel / tired / now

10. Miss Vui / never / eat / vegetables / her dinner