Gọi số bé là ab, số lớn là 3ab.

Hiệu của 2 số đó là: 3ab - ab = 300

Tổng của 2 số đó là:

               207 x 2 = 414 

               Số lớn là:

               (414 + 300) : 2 = 357 

                Số bé là:

               357 - 300 = 57

                         Đáp số: 357 và 57

chuẩn rùi đấy

1: my brother up at this school math from 2000

2: my father made for the enterprises that are 20 years

3: This is the first time I ate Chinese food

4: previously she never went to Japan

HI! I come from a family of five people: my parents, my two younger brother and I. 
My parents are farmers who work very hard in the field. On the trip, they are so busy. Inspite of its, they always take more time as possible to take care of us. My father is great father. Dad always teachs me things to do and not to do in this life. He is also good husband for may mom. On the trip, he often helps my mom to cook some special dishes. And at weekend, he usually fixes everything broken in our house. 
About my mother. she is a caring woman. mom is always the first person to get up early in the morning to wake up I and my first younger brother and prepare breakfast before going to school. She is very thoughful! About my two younger brothers. the first one is 16 years old and the second one is 6 years old. they are obedient! And I, I'm in final hingh school and in my attempt. I'm under a lot of study pressure. inspite of its, I always dream and try to study harder and harder to get success in the future. 
It's my family. I feel very happy in it. And I love my family more than anything! 
bạn ơi còn mẫu khác mình ghi ơ hồi lớp 5 nè!. Bạn muốn bài nào thì cứ ghi nhé.
 My family have 4 people. There are my mother,my father,my elder sister and me.My parents are both the same age, 50 years old.My father is a teacher ,he is very kind and hard-working. My morther is a nurse, she is interesting, I think she is the most funny person in my family. My elder sister is 18 years old, she is a student and she is very pretty,she not only learns well but also plays the piano very well, I think she will become a pianist in the future. And me, I’m 16 years old and I’m a pupil, in the future i'll be a marketing staff. I love my familly very much.For me, family always is the assured a reliable support.

Chia động từ :

1.The milk smell sour. Do you keep milk a long time ?

2.These workmen are never satisfied; they always complained.

3.We use thí room today because the windown in the other room is broken.

4.He always  says that he will mend the windown but he never does it.

5.Do you know why does an apple fall down and not up ?

6.Will you write to him tonight ?

   Yes, I always (write)to him on his birthday.Do you wantto send any message ?

1. Cho các số liệu về quãng đường bộ:
   Hà Nội - Vĩnh Yên : 54km,
   Vĩnh Yên - Việt Trì : 19km,
   Việt Trì - Yên Bái : 82km.
Tính quãng đường một ô tô đi từ Hà Nội lên Yên Bái qua Vĩnh Yên và Việt Trì.
Quãng đường một ô tô đi từ Hà Nội lên Yên Bái là: 54 + 19 + 82 = 155 (km).
2. Áp dụng các tính chất của phép cộng và phép nhân để tính nhanh:
a). 86 + 357 + 14 =( 86 + 14 ) + 357
                             = 100 + 357
                             = 457                                     

 b). 72 + 69 + 128 =( 72 + 128 ) + 69
                              = 200 + 69
                              = 269 
c) 25 . 5 .4 . 27. 2= ( 25. 4 ) . ( 5. 2) x 27
                             = 1000 x 27
                              1027                                   
 d). 28 . 64 + 28 . 36 = 28 - (64 + 36)
                                  = 28 . 100
                                  = 2800
Mình làm rùi 
 

SO SÁNH

A.    TÍNH TỪ:

S+ be + adj-er/ more- adj + than + O

-> S+ be + adj(trái nghĩa) -er/ more- adj (trái nghĩa) + than + O

-> S + be + not+ so/ as + adj + as + O

1. Lan is younger than Hoa.

Hoa is …………older than Lan………

Hoa isn’t ………so long than Lan……………

2. My English was better tha Nga’s.

Nga’s English was……………worse than mine.…………

Nga’s English wasn’t…………better than Nga's…………

3. Her car is more comfortable than mine.

My………………more uncomfortable than her car.……………

My ………………car isn't so comfortable than her.……………

2 : y = 7/2
=> y = 2 : 7/2
=> y = 4/7