Recent questions in Class 8

Area of a rectangle with length $4ab$ and breadth $6b^2 $ is

asked May 29, 2015 by meena.p

1 answer

Product of the following monomia is $4p,-7q^3 \times -7pq$ is

asked May 29, 2015 by meena.p

1 answer

Sum of $a-b+ab,b+c-bc$ and $c-a-ac$ is

asked May 29, 2015 by meena.p

1 answer

If we subtract $-3x^2y^2 $ from $x^2y^2$ then we get,

asked May 29, 2015 by meena.p

1 answer

Evaluate $8x+7$ given that $x-3=10$

asked May 29, 2015 by meena.p

1 answer

Evaluate $3x^3 -4y^4 $ for $x=-1; y=-2$

asked May 29, 2015 by meena.p

1 answer

Find the value of $49x^2+36y^2+84xy$ when $x=3;y=6$

asked May 29, 2015 by meena.p

1 answer

Expand $\bigg(\large\frac{x}{6}-\frac{y}{5}\bigg)^2$

asked May 29, 2015 by meena.p

1 answer

Solve : $(\sqrt 3 x -2y)^2$

asked May 29, 2015 by meena.p

1 answer

Solve : $(7x-4x^2+2x^3-5)$ by $(3x-2)$

asked May 29, 2015 by meena.p

1 answer

What must be added to $y^2+5y-6$ to get $y^3-y^2+3y-2$

asked May 21, 2015 by meena.p

1 answer

What must be added to $x^3+3x-8$ to get $3x^3+x^2+6$

asked May 21, 2015 by meena.p

1 answer

Subtract $2x^3-x^2+4x-6 $ from $x^3+5x^2-4x$

asked May 21, 2015 by meena.p

1 answer

Find the sum of $5+x-x^2-x^3, 3x -5+2x^2-x^3, x+5+2x^3-5x^2$

asked May 21, 2015 by meena.p

1 answer

If $(a+b=11)$ and $a+b=30$, then find the value of $(a^2+b^2)$

asked May 21, 2015 by meena.p

1 answer

If $(x+2),(x^2+4) $ are length and breadth of a rectangle respectively, the are will be

asked May 21, 2015 by meena.p

1 answer

The product obtained on multiplying $x^3+3x^2-5x$ by $(x-1)$ is a

asked May 21, 2015 by meena.p

1 answer

If $x- \large\frac{1}{x}$$=9$, find the value of $x^2+\large\frac{1}{x^2}$

asked May 21, 2015 by meena.p

1 answer

Simplify $a(b-c) -b(c-a) -c(a-b)$

asked May 21, 2015 by meena.p

1 answer

Find the value of $(5a^6) \times (-10 ab^2)\times (-2.1a^2b^3)$ for $a=1$ and $b=\large\frac{1}{2}$

asked May 21, 2015 by meena.p

1 answer

Find the value of expression $(81x^2+16y^2-72xy)$ when $x =\large\frac{2}{3}$ and $y=\large\frac{3}{4}$

asked May 21, 2015 by meena.p

1 answer

Find the area of rectangle with $(2x^2,5y^2)^2$ as apart of monomials as their length breadth respectively.

asked May 21, 2015 by meena.p

1 answer

Find the product

asked May 20, 2015 by meena.p

1 answer

Multiply $(7xy+5y) \times 3xy$

asked May 20, 2015 by meena.p

1 answer

Add $5x^2 +3x-8 $ and $4x^2-5x+6$

asked May 20, 2015 by meena.p

1 answer

$12 \%$ of x is $18$ , x is equal to

asked May 20, 2015 by meena.p

1 answer

$12.5 \%$ of $192 =50\%$ of ?

asked May 20, 2015 by meena.p

1 answer

If $90\%$ of $A=30\%$ of B and $B= x\%$ of A then the value of x is

asked May 20, 2015 by meena.p

1 answer

$x \times 15=37.5 \%$ of $220$. Find x

asked May 20, 2015 by meena.p

1 answer

Overhead charges such as transportation toll tax, repair etc are included in the _________

asked May 20, 2015 by meena.p

1 answer

A man buys balloons 3 for a rupee and sells them at 2 for a rupee, find his gain percent?

asked May 20, 2015 by meena.p

1 answer

The weight of a 10 year old girl was $32\;kg$ . But it was misread as $36 \;kg$ . Find the error percentage ?

asked May 20, 2015 by meena.p

1 answer

The weight of a 10 year old girl was $32\;kg$ . But it was misread as $36 \;kg$ . Find the error percentage ?

asked May 20, 2015 by meena.p

0 answers

By what a number must be multiplied. So as to increase it by $17\%?$

asked May 20, 2015 by meena.p

1 answer

My bank deposit has increased by $40\%$ during the past year. It is now $Rs. 50,400$ what was it a year ago .

asked May 20, 2015 by meena.p

1 answer

The salary of Ravi increases in the ratio $3:5$ his original salary was $Rs. 7500$ find his new salary

asked May 20, 2015 by meena.p

1 answer

For books, the printed price is the _____

asked May 20, 2015 by meena.p

1 answer

Value added tax is charged on the _________ of an article.

asked May 20, 2015 by meena.p

1 answer

If the radius of a circle is decreased by $x\%$ then the radius of that circle increases by _________

asked May 20, 2015 by meena.p

1 answer

If the circumference of a circle is increased by $x \%$ then the radius of that circle increase by ________

asked May 20, 2015 by meena.p

1 answer

Find the ratio of the speed of a car $60 \;km /hr$ to the speed of a scooter $30\;km/hr$

asked May 20, 2015 by meena.p

1 answer

On a certain day, $15 \%$ of boys were absent and $34$ were present . How many boys were there in the class?

asked May 20, 2015 by meena.p

1 answer

$40\%$ of a certain number is $320$ find the number

asked May 20, 2015 by meena.p

1 answer

What sum of money when decreased by $20\%$ becomes $Rs.108$?

asked May 20, 2015 by meena.p

1 answer

If the cost price of $18$ cycles be equal to selling price of 16 cycles , find the gain or loss percent.

asked May 20, 2015 by meena.p

1 answer

Find the S.P when $M.P= Rs. 64$ and discount $=12.5 \%$

asked May 20, 2015 by meena.p

1 answer

A manufacturer's cataloged price of a car is $Rs. 42000$ , but he allows the retailer $20 \%$ discount. What does the retailer pay for the car?

asked May 19, 2015 by meena.p

1 answer

Find the M.P when $S.P= Rs.1920$ and discount = $4\%$

asked May 19, 2015 by meena.p

1 answer

Shishir and Vinay borrowed $Rs. 2500$ and $Rs. 300$ respectively at the same rate of simple interest for $2 \large\frac{1}{2}$ years. If Vinay paid $Rs. 175$ more interest than shishir, find the rate of interest per annum .

asked May 19, 2015 by meena.p

1 answer

A man has $Rs. 7000$ to invest he invest $Rs. 4000$ at $3 \%$ P.a . At what rate of interest must be invest the remainder in order to obtain $4\%$ interest on the total sum ?

asked May 19, 2015 by meena.p

1 answer

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