Điền đáp án đúng vào chỗ trống :
Bạn An nặng 34,7kg. Bạn Bình nặng hơn An 2,8kg. Hỏi cả hai bạn nặng bao nhiêu kg?
Đáp số:kg
A.72,2
B.
C.
D.

Điền dấu (>; <; =) thích hợp vào ô trống
12,3 + 35,623,5 + 18,6
A.>
B.
C.
D.

Tính
 
85
.
5
+
 
 
4
.
5
 
.
A.9
B.0
C.0
D.

Điền giá trị còn thiếu vào bảng theo mẫu
Số hạng
12,3
34,66
90,84
5,64
Số hạng 
35,6
79,01
53,35
33,8
Tổng
47,9
A.113,67
B.144,19
C.39,44
D.

Tìm x
x
-  78,01
=
34,76
x
=
34,76
78,01
x
=
A.+
B.112,77
C.
D.

Tìm x
x
-  0,046
=
1,044
x
=
1,045
0,046
x
=
A.+
B.1,091
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Son Doong Cave is _______ to be the largest one in the world with 200 meters in height, 200 meters in width and at least 8.5 kilometers in length.
A.brought
B.taken
C.considered
D.chosen

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Tourists should _______ purchasing unusual relics illegally removed from protected heritage sites.
A.avoid
B.stay away
C.aware
D.hesitate

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Because of its geological value, Phong Nha – Ke Bang was recognized _______ a World Heritage Site by UNESCO in July 2003.
A.as
B.in
C.for
D.to

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The archaeological _______ that led to the discovery of the ancient city lasted several years.
A.relic
B.dynasties
C.heritage
D.excavations