Tích của hai phân số là $ \dfrac{2}{5}. $ Nếu thêm vào thừa số thứ hai 3 đơn vị thì tích là $ \dfrac{28}{15}. $ Tìm hiệu của phân số thứ nhất và phân số thứ hai.
A. $ \dfrac{316}{495}. $
B. $ \dfrac{163}{495}. $
C. $ \dfrac{-163}{495}. $
D. $ \dfrac{-316}{495}. $

Tìm x
Lưu ý: sử dụng 1 dấu cách giữa số và dấu
3  x
x
=
90615
x
=
x
=
A.90615 : 3
B.30205
C.
D.

Tính nhẩm:
5000 x 2 : 5 =: 5 =
A.10000
B.2000
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
My career adviser talks to me ______ he is my father.
A.so
B.like
C.because
D.as

Điền số thích hợp vào ô trống
Tính:
27l + 26l =l
A.53
B.
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If she had paid more attention in class, she _______ the lectures thoroughly.
A.will understand
B.would understand
C.would have understood
D.would understood

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The students stopped their work _____ the skilled craftsman had requested.
A.unless
B.although
C.as
D.if

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The programme at the vocational school was so bad that Nam ________ school.
 
A.ran out of
B.dropped out in
C.dropped out of
D.ran away from

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Linda was offered ______ a good job _____ she didn't hesitate to accept it.
A.such/that
B.so/such
C.so/that
D.such/so

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I have told you many times that I ______ you to come home before ten. Being out late at night is dangerous.
A.wanted
B.would want
C.will want
D.want