Question

[pham thi yen ngoc]

Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)

 

Question 1:
The length of a rectangle is  and its width is .
The perimeter of this rectangle is  . 

 

Question 2:
Calculate: 

 

Question 3:
If  then 

 

Question 4:
. The missing number is 

 

Question 5:
Jane had  dollars. She bought  of mangoes at  dollars per kg.
How much money did she have left? Answer:  dollars.

 

Question 6:
If ;  and  then  

 

Question 7:

The missing number is 

 

Question 8:
.
The missing number is 

 

Question 9:
The area of a rectangle is . If its length is increased by  and its width is unchanged then its area will equal . Its width is  

Fill in the blank with the suitable sign (>; =;<)

 

Question 10:
Compare : 

Answer 1

[Tạ Xuân Tân]

3.7*9.2-12.5/2=27.79

Answer 2

[Phan Nhật Hào]

Câu 10 : 2,175 x 5       <      10 + 0,8 + 0,071 + 0,005