Math quiz for class 8

Factorized form of  $2x^2+x$  is

•  $3x^2$  

•  $2x(x+1)$  

•  $3x$  

•  $x(2x+1)$  

How many halves make three and a half?

• 4

• 5

• 6

• 7

If 14 + 2a = 26 then value of a is

• 6

• 12

• 14

• 2

Decrease 120 by 30%

• 90

• 150

• 84

• 30

Subtracting  $7x+y$  from   $-x+y$  gives

•  $6x+2y$  

•  $8x+2y$  

•  $-8x$  

•  $8x$  

How many corners do 4 squares and two triangles have?

• 30

• 6

• 22

• 7

An equation of the line whose slope is 3 and whose y-intercept is 8 is

• $y=8x+3$

• $y=3x+8$

• $y=-3x+8$

• $y=-3x-8$

A number is greater than 3 but less than 8. Also the number is greater than 6 but less than 10. What is the number?

• 5

• 6

• 7

• 8

The factors of  $x^2-4$  are

•  $\left(x-2\right)\left(x-2\right)$  

•  $\left(x-4\right)\left(x-4\right)$  

•  $\left(x+2\right)\left(x+2\right)$  

•  $\left(x+2\right)\left(x-2\right)$  

What will be the average of first five natural numbers

• 2

• 3

• 4

• 5