2400 na bạn 

2400 nha , k đi

354 nha bn

số dư nhỏ nhất là:5.

cho vậy là đủ tìm số bị chia rồi

a) 12-(10-19)

= 12 - -9

= 21

b (-27) - ( 13 -19 )

= -27--6

= -21

c) 14-(-15)-21

=29 -21

=8

d)(-27) +16-1

= -11-1

=-12

HT

a) 12 - (10 - 19) = 12 - (-9) = 12 + 9 = 21

b) (-27) - (13 - 19) = (-27) - (-6) = (-27) + 6 = -21

c) 14 - (-15) - 21 = 14 + 15 - 21 = 29 - 21 = 8

d) (-27) + 16 - 1 = (-11) - 1 = -12

12 462 116 nha bn

12  462116

1004 < x < 2004 

x = 1005;1006;1007;...;2003

Ex1: Complete the sentences with: a, an, some, any

        1. We didn’t buy …………flowers.

        2. This evening I’m going out with ………….friends of mine.

        3. “Have you seen ………..good films recently?”

– “No, I haven’t been to the cinema for ages”.

        4. I didn’t have ……………money, so I had to borrow………..

        5. Can I have ………milk in my coffee, please?

        6. I was too tired to do………work.

 7.  There is .................. banana in the basket.

        8. I need ..................tea.

        9. Are there ..................tomatoes in the fridge?

       10. We have .........rice, but we don't have ......meat.

       11. There's ..................orange on the table.

       12. I'd ..................apple juice.

       13. He has ............TV and ............computer.

       14. Would you ..................ice- cream?

       15. I have............... friends in Hue.

       16. Do you have ...............dogs or cats at home?

       17. Would you ..................cup of tea?

       18. I would .................. cakes, please.

       19. Can I have ............glass of milk?

       20. Thank you. And .........box of chocolates would be fine.

       21. I don't have ............... paper.

       22. Is there ............... petrol in the car?

       23. I buy ...............fruit, but I don't have ...............vegetables.

       24. Do you have ............... stamps? I need two.

       25. I need ...............butter to make a cake.

       26. I don't have ...............free time today. Sorry.

       27. Are there............... potatoes in the basket?

        28. There is ...............ink-pot on the table.

EX2: Find and corect the mistakes

Câu 1: How much is a bowl of fried rice?    - They is 2,500 dong.

               A                   B              C                 D

Câu 2: What is you favorite food?

            A       B        C        D

Câu 3: What  weather are you ?  

           A           B       C           D

Câu 4: Are there some books on the table. 

          A                B               C         D

Câu 5: He is going to visits Ngoc Son temple. 

             A         B            C                        D

Câu 6: Are there some books on the table. 

           A              B                C         D

EX3: Complete the sentences with:  “much, many, few, a few, little, a little”

1. He isn’t very popular. He has ………..friends.

2. Ann is very busy these days. She has ………..free time.

3. Did you take …………….photographs when you were on holiday?

4. The museum was very crowded. There were too………..people.

5. Most of the town is modern. There are …………..old buildings.

6. We must be quick. We have………..time.

7. Listen carefully, I’m going to give you ……….advice.

8. Do you mind if I ask you……….questions?

9. This town is not a very interesting place to visit, so …….tourists come here.

10. I don’t think Jill would be a good teacher. She’s got …………..patience.

11. “Would you milk in your coffee?” – “yes, please. ………….”

12. This is a very boring place to live. There’s ………….to do.

Trả lời :

Các số đó là : 510; 1020

# Hok tốt !

chiều rộng căn phòng là

9 - 3 = 6 ( m )

diện tích xung quanh căn phòng không kể các cửa và cửa sổ là

( 9 + 6 ) x 2 x 4 - 11,25 = 108,75 ( m² )

diện tích trần nhà căn phòng là

9 x 6 = 54 ( m² )

diện tích cần quét vôi là

108,75 + 54 = 162,75 ( m² )

đáp số : 162,75 m²