đổi 200m=2hm,120m=1,2hm vì ha=hm

diện tích thửa ruộng là:

2*1,2=2,4

             Đ/S:2,4

kết quả là đúng chuẩn 100%đấy mình tính đi tính lại rồi

307

100%

Cho dạng đúng hoặc thì đúng của động từ trong ngoặc

Lan and Hoa ( read ) __are reading__ in the library at the moment

We ( not com ) ___won't come___ here tomorrrow morning

Listen ! The girl ( play ) __is playing__ the piano

Nam ( go ) _goes___ to the English club rvery Saturday

What _are_ you ( do ) __doing__ now? I ( grow ) __am growing___ some flowers

My father ( travel ) will travel to Nha Trang next week

Students often ( go ) _go__ to he school cafeteria at luch tin

You can ( find ) __find__ math books on the racks in the middle

Chuyển đoạn văn sau đây thành ngôi tôi( I ) :

One day,I was bored . I was in my room and my mother was cooking in the kitchen . She asked loudly ''Where are you , Peter ? '' I answered , '' I'm upsairs , Mum. '' My mother heard me running down and said'' Don't run down the stairs! '' I replied '' OK,I won't do it again,Mum.''

My school is ....( điền tên trường pn ) ........This Saturday, our History teachers will celebrate a History competiton. Each class votes 1 student to take part in this competition. And the law is that: The teachers will give each representative of each class a number of time, then he/she must guest the event of this time, the more you guest, the more points you get. with each event, the group will get 5 points. And the winner is the representative who get the most marks. The winner will be awarded a CD of History f Vietnam. This competition is donated by the Student's Parents society.

Với tam giác ABC có góc A=90 độ và góc B=30 độ 
=> góc C=60 độ 
Gọi M là trung điểm của BC 
mà tam giác ABC có góc A bằng 90 độ 
=>AM=BM=CM(định lý) 
=>tam giác AMC cân tại M(dấu hiệu nhận biết) 
mà góc C bằng 60 độ 
=> tam giác AMC đều(dấu hiệu nhận biết) 
=>AC=MC(đ/n) 
mà MC =1/2.BC (gt) 
=> AC = 1/2 BC (tcbc) 
Ta có điều phải chứng minh

1.It / easy / find / book / either / author / title .

It is easy to find a book eith with the author the title.

2.Those / book / back / library / be / Vietnamese.

Those book at the back of the library are in Vietnamese.

3.Your father / watch / TV / living room / the moment ?

Is your father watching TV in the living room at the moment?

4.Magazines / newspapers / be / the rack / conner / the left.

5.Our library / one / the large / libraries / city .

Our library is one of the lagest libraries in the city.

Gọi 5 số lần lượt là a,b,c,d,e 
ta có : 
a+b+c+d+e=138*5=690 
a+b+c=127*3=381 
=>381+d+e=690 
hay d+e=690-381=309 
ta lại có c+d+e=148*3=444 
=>c+309=444 
=>c=135 
vây số cần tìm là 135

I have a best friend ever in my life named Ashutosh. He is someone special in my life who helps me in my every difficulty. He is someone who showed me right path. He always has time for me even in his busy schedule. He is my neighbour that’s why we become together even after school time. We go together at picnic whenever we get vacation from school. We enjoy our festival holidays together and with each other’s family. We go to see Ramlila fair in the Ramlila ground together and enjoy a lot. We always take part in every extracurricular activities of the school. We love to play cricket and carom at home. He is more than a mentor for me because he always gives me right decisions whenever I become in difficulty.

He is so special for me in my life; I never do anything without him. He always become in a good mood and never compromise with wrong ways. He always does right things and motivates every one of us in the classroom to do the same. He always has smiling face even in his difficult times and never let his difficulties to come on his face. He is a good counsellor and loves to explain anything. He cares for his parents, grandparents and other family members. He obeys them always and other old people of the society. I met him first time when I was in the fifth grade and now we are in 8th standard in the same section.

He is very tall and looks different from my other classmates. Once I was very upset because of money problem. I could not buy all necessary books in the class 6. He asked me, what happened and I told him my story. He said that, for this small problem you are so worry and not happy for some days. He laughed and told me that don’t worry we can share all books in the school as well as at home. You don’t need to buy even any single book for whole year. After that he made me laugh through his jokes and stories. I never forget that moment he helped me and always become ready to help him too. He is so practical and never mixes the personal and professional life. He helps me always whenever I get difficulties in solving my Maths homework. Our likes and dislikes never match however we are best friends.