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Ta có: 5 + 3 =28 làm hàng đơn vị
5 - 3 = 2 làm hàng chục
Ta có: 9 + 1 = 10 làm hàng chục và đơn vị
9 - 1 = 8 làm hàng trăm
...
Vậy: 7 + 3 = 10 làm hàng chục và đơn vị
7 - 3 = 4 làm hàng trăm
Kết quả là 7 + 3 = 410
1. Does your class have thirty students ?
\(\rightarrow\)Are there thirty students in your class ?
2. How much does a bowl of noodles cost ?
\(\rightarrow\)How much is a bowl of noodles ?
3. He often walks to school.
\(\rightarrow\) He often goes to chool on foot
1. Are there thirty students in your class?
2. How much is a bowl of noodeles cast?
3. He often goes to school on foot .
32.He rides his bike to shool.
He goes to school by his bike.
33.They travel to work by car.
They drive to work.
34.My class has thirty students.
There are thirty students in my class.
35. Is there a board and many desks and benches in your classroom?
Does your classroom have a board and many desk and benches ?
36.There are beans and peas in the market.
The market has beans and peas.
37.The manu doesn't have fish and rice.
There aren't any fish and rice in the menu.
38.The supermarket has soup,toothpaste, chocolate, tea and apples.
There are soup,toothpaste, chocolate, tea and apples in the supermarket.
39.There isn't rice in the foodstall.
The foodstall doesn't have rice.
40.Hanoi has the Literature Temple.
Literature Temple in Hanoi.
41.Our country has lots of mountains and rives.
There are many mountains and rives in our country.
42.There is a lot of rain in Vietnam.
Vietnam has a lot of rain.
1. large
2. chairs
3. bookshelf
4. near
5. dictionary
6. the
7. newspapers
8. next
9. clothes
10. wall
) 
Mk tên Nguyệt, 13 tuổi, hok trg THCS Huỳnh Văn Nghệ,thik môn Toán, cung sư tử ( mk lười lấy hình lém, khỏi hình na)
cung dk
1 đẹp hơn, cute và đẹp