A teacher in grade-VI provided each child with a centimeter grid paper and a pair of scissors. She wanted them to explore how two-dimensional shapes can be folded into three-dimensional objects. Which of the following concepts are the students exploring?

• Reflection
  
  

• Nets
  
  

• Decimals
  
  

• Rotation

If two adjacent sides of a square paper are decreased by 20% and 40% respectively, by what percentage does the new area decrease?

• 50

• 52

• 60

• 48

The ratio of the side and height of an equilateral triangle is

• 1:1

• 2:$\sqrt{3}$

• $\sqrt{3}$:2 

• 2:1

Find the value of $\frac{547527}{82}$if $\frac{547.527}{0.0082}$=x,

• 10x

• 100x

• $\frac{\mathrm{x}}{100}$

• $\frac{\mathrm{x}}{10}$

With an activity on paper folding, a teacher was trying to depict the relationship of the areas of a parallelogram and a triangle. Which of the following best depicts the transformation of stages?

Students make errors while solving, mathematical problems because

• they do not refer to multiple textbooks
  
  

• their socio-economic status affects their performance
  
  

• they make alternative interpretations of concepts in their attempt to make meaning
  
  

• they do not practice enough

In the given figure, PS=SQ=SR and $\angle$SPQ=54^o. Find the measure of $\angle \mathrm{x}$.

• 72^o

• 108^o

• 36^o

• 54^o

8.

The fractional equivalent of 57.12% (approx.) is

• $\frac{359}{625}$

• $\frac{357}{625}$

• $\frac{347}{625}$

• $\frac{349}{625}$

2x-13, 2x-11, 2x-9, 2x-7 are consecutive

• even numbers
  
  

• odd numbers
  
  

• natural numbers
  
  

• prime numbers

Ameena is playing with matchsticks and adds one at each stage

Appu, on the other hand, makes a table 

What is your observation about the two children in this situation?

• Ameena will need lots of matchsticks to come to a generalisation. However, Appu would be faster.

• Both Ameena and Appu are trying to make generalisations

• Ameena would be learning by doing and Appu may not be able to see the pattern at all.

• Ameena is only playing and Appu is doing Mathematics.