a) Rút gọn các phân số trên;

\(\frac{3}{5}=\frac{3}{5};\frac{5}{6}=\frac{5}{6};\frac{25}{30}=\frac{5}{6};\frac{9}{15}=\frac{3}{5};\frac{10}{12}=\frac{5}{6};\frac{6}{10}=\frac{3}{5}\)

b) Cho biết trong các phân số trên có những phân số nào bằng nhau

\(\frac{3}{5}=\frac{9}{15}=\frac{6}{10};\frac{5}{6}=\frac{25}{30};\frac{10}{12}\)

1. She is my friend. She is from ___.

A. vietnamese B. china C. australian

2. His brthday is .......... november.

A. on B. in C. from

3. How many .............. are there on the desks?

A. boxes B. boxs C. pencilbox

4. Does your sister like maths ? - Yes, she.........

A. does B. is C. likes

6. What is......................... name ?

A. he B. their C. her

7. ls.................... school big and nice ?

A. you B. we C. his

8. Can you speak............................?

A. vietnamese B. england C. japan

9. How many students are......... ?

A. they B. there C. these

10. What subjects do you like the most ?

A. sport B. science C. singing

chia 3 dư 1 nhe bạn

tt

đoán đc là đúng 1/2 rồi đấy

tùy từng A mà có số dư khác nhau 

ai k mình mình k lại cho

Make meaningful sentences with the words given below and some other additions:

1. when / drive/city/not drive/over 50 kms per an hour

=> When you drive in the city, you mustn't drive at over 50 kms per an hour.

2. you/ to keep/ these objects/children/ because/ too/ dangerous/them.

=> You ought to keep these objects out of the children's reach because it's too dangerous for them.

3. not let/ children/ play matches.

=> You mustn't let children play with the matches.

4. house/opposite/hospital/the town .

=> The house is opposite the hospital in the town.

5. my classroom/between/room number 5/room number 7/second floor.

=> My classroom is between the room number 5 and the room number 7 on the second floor.

6. my mother/ not work/office.

=> My mother doesn't work in the office.

7. she/at home/help/housework.

=> She is at home to help her mother with the housework.

8. post office/ left/ bank

=> The post office is to the left of the bank.

x + 32 = 18 + 45

x + 32 = 63

       x = 63 - 32

       x = 31

Duyệt nhé 

chia cho 19. bằng 2/3

Đề bài : 

4 phút =   ... giây . 

Đổi : 1 phút = 60 giây . 

        4 phút = 60 giây x 4 = 240 giây . 

Vậy : 

4 phút = 240 giây . 

Nè , bạn kết bạn với mình nha !