Chọn khẳng định đúng trong các khẳng định sau:
A. $ \left( a\times b \right)\times c=\left( a\times c \right)+b $ .
B. $ \left( a\times b \right)\times c=a\times \left( b\times c \right) $ .
C. $ \left( a\times b \right)\times c=a+\left( b\times c \right) $ .
D. $ \left( a\times b \right)\times c=\left( a+b\times c \right) $ .

Tìm x
x
:  5
=
0,65
x
=
0,65
5
x
=
A.×
B.3,25
C.
D.

Tìm x
x
:  14,74
=
2,23
x
=
2,23
14,74
x
=
A.×
B.32,8702
C.
D.

Tìm x
x
:  0,01
=
295,04
x
=
295,04
0,01
x
=
A.×
B.2,9504
C.
D.

Điền đáp án thích hợp vào chỗ trống:
Tính bằng cách thuận tiện nhất:
0,64 × 2,6 + 0,64 × 7,4 =× ( + 7,4 ) =× 10 =
A.0,64
B.2,6
C.0,64
D.6,4

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The elderly people in the village agreed to have the ………. built.
 
A.commute house
B.community house
C.communal house
D.commune house

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
English is one of the most ………. languages in the world.
A.talked
B.spoken
C.relayed
D.communicated

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Little children are told to ………. the streets carefully and must look both ways before doing so.
A.cross
B.pass
C.take
D.go

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
………. are buildings to take sick and injured people to.
A.Churches
B.Hospitals
C.Factories
D.Cemeteries

Find the word which has a different sound in the part underlined.
A.brown
B.downside
C.crown
D.shadow