Recent questions in Class 8

Write down the rational number whose numerator is $(-3) \times 4$ and whose denominator is $(34-23) \times (7-4)$

asked Jan 15, 2015 by meena.p

1 answer

What should be subtracted from $\bigg( \large\frac{3}{4} -\frac{2}{3} \bigg)$ to get $\large\frac{-1}{6}$ ?

asked Jan 15, 2015 by meena.p

1 answer

What should be added to $\bigg( \large\frac{2}{3} +\frac{3}{5}\bigg)$ to get $\large\frac{-2}{15}$ ?

asked Jan 15, 2015 by meena.p

1 answer

Multiply $\large\frac{-6}{11}$ by $\large\frac{-55}{36}$

asked Jan 15, 2015 by meena.p

1 answer

Can we divide 1 by 0.

asked Jan 15, 2015 by meena.p

1 answer

Are rational numbers always closed under division ?

asked Jan 15, 2015 by meena.p

1 answer

Simplify : $\bigg ( \large\frac{3}{11} \times \large\frac{5}{6} \bigg) -\bigg ( \large\frac{9}{12} \times \large\frac{4}{3} \bigg) +\bigg ( \large\frac{5}{13} \times \large\frac{6}{15} \bigg)$

asked Jan 15, 2015 by meena.p

1 answer

The reciprocal of a negative rational number _________

asked Jan 14, 2015 by meena.p

1 answer

One liter of petrol costs of $\large\frac{187}{4}$ . What is the cost of $35\;liters$ of petrol ?

asked Jan 14, 2015 by meena.p

1 answer

An airplane covers $1020\;km$ in an hour. How much distance will it cover in $\large\frac{25}{6}$ hours ?

asked Jan 14, 2015 by meena.p

1 answer

A cord of length $\large\frac{143}{2}$ $m$ has been cut into 26 pieces of equal length . What is the length of each piece.

asked Jan 14, 2015 by meena.p

1 answer

Rita had $Rs. 300$ . She spend $\large\frac{1}{3}$ of her money on notebook and $\large\frac{1}{4}$ of the remainder on stationery items. How much money is left with her ?

asked Jan 14, 2015 by meena.p

1 answer

If the area of a room is $\large\frac{261}{4}$ $m^2$ If the breadth is $\large\frac{87}{16}$ meters, What is its length ?

asked Jan 14, 2015 by meena.p

1 answer

A drum full of the rice weights $\large\frac{241}{6}$ $kg$ . IF the empty drum weight $\large\frac{55}{4}$ $kg$ , find the weight of rice in the drum

asked Jan 14, 2015 by meena.p

1 answer

Divide the sum of $\large\frac{-13}{5}$ and $\large\frac{12}{7}$ by the product of $\large\frac{-31}{7} 4 and$ \large\frac{-1}{2}$

asked Jan 14, 2015 by meena.p

1 answer

The cost of $2 \large\frac{1}{3}$ meters of rope is $75 \large\frac{1}{4}$ . Find cost of cloth per meter

asked Jan 14, 2015 by meena.p

1 answer

Find $(m+n) \div (m-n)$ if $m = \large\frac{2}{5} \qquad n= \large\frac{1}{2}$

asked Jan 14, 2015 by meena.p

1 answer

By what number should we multiply $\large\frac{-8}{13}$ so that the product may be 24

asked Jan 14, 2015 by meena.p

1 answer

Is the difference of two rational number a rational number .

asked Jan 14, 2015 by meena.p

1 answer

What number should be subtracted from $\large\frac{-2}{3}$ to get $\large\frac{-1}{6}$

asked Jan 14, 2015 by meena.p

1 answer

The sum of two rational number is $-2$ . If one of the number is $\large\frac{-14}{5}$ , find the other .

asked Jan 14, 2015 by meena.p

1 answer

What is the negative of a negative rational numbers?

asked Jan 14, 2015 by meena.p

1 answer

The product of two number is $\large\frac{-20}{9}$ . If one of the number is 4, find the other

asked Jan 14, 2015 by meena.p

1 answer

The rational number _______ is the multiplication identify for rational number .

asked Jan 14, 2015 by meena.p

1 answer

Compare the following pair of rational number $\large\frac{2}{5}$ and $\large\frac{3}{4}$

asked Jan 14, 2015 by meena.p

1 answer

What must be subtracted from $\large\frac{-2}{3}$ to get $\large\frac{3}{5}$ ?

asked Jan 13, 2015 by meena.p

1 answer

What must be added to $\large\frac{-3}{8}$ to get $\large\frac{5}{16}$ ?

asked Jan 13, 2015 by meena.p

1 answer

Multiply $\large\frac{4}{7}$ by the reciprocal of $\large\frac{1}{63}$

asked Jan 13, 2015 by meena.p

1 answer

For any rational number the multiplication identify is _________

asked Jan 13, 2015 by meena.p

1 answer

Between any two rational number there are _______ rational numbers.

asked Jan 13, 2015 by meena.p

1 answer

The rational number ________ is the additive identify for rational number

asked Jan 13, 2015 by meena.p

1 answer

The additive inverse of $\large\frac{a}{b}$ is

asked Jan 13, 2015 by meena.p

1 answer

Sunita bought $2 \large\frac{1}{2}$ $kg$ onion at $Rs\; 10$ per kg and $1 \large\frac{3}{8}$ $kg$ potato at $16 \large\frac{8}{11}$ per kg. How much money did she give to the shopkeeper ?

asked Jan 13, 2015 by meena.p

1 answer

A boy walks $\large\frac{2}{3}$ $km$ from a place Q. towards north and then from there $1\large\frac{3}{5}$ km$ towards south. Where will he be now from Q.

asked Jan 13, 2015 by meena.p

1 answer

Subtract $1\large\frac{2}{3}$ from the sum of $\large\frac{1}{3}$ and $\large\frac{1}{5}$

asked Jan 13, 2015 by meena.p

1 answer

Anil has to to cover $12 \large\frac{1}{2}$ $km$ distance to reach school. If his speed is $5 \;km/hr$ how much time he will take to reach the school

asked Jan 13, 2015 by meena.p

1 answer

A man has Rs. 150 with him. He bought $4 \large\frac{1}{2}$ litres of milk at $Rs. 24$ per liters. How much money left with him ?

asked Jan 13, 2015 by meena.p

1 answer

A salwar needs $2 \large\frac{1}{2}$ $m$ . How many salwars can be made from $27\large\frac{1}{2}\;$ $m$ cloth ?

asked Jan 13, 2015 by meena.p

1 answer

Divide the sum of $\large\frac{-2}{3}$ and $\large\frac{1}{5}$ by their product

asked Jan 13, 2015 by meena.p

1 answer

The area of a rectangle is $26 \large\frac{1}{4}$ $m^2$ . If its length is $17 \large\frac{1}{2}$ $m$ . Find its width

asked Jan 13, 2015 by meena.p

2 answers

Anitha bought $3 \large\frac{1}{2}$ $m$ ribbon at $Rs 5\large\frac{3}{7}$ per meter , $4\large\frac{3}{4}$ $m$ cloth at $Rs. 27\large\frac{1}{2}$ per metre.How money did she spend ?

asked Jan 13, 2015 by meena.p

2 answers

The product of two numbers is $60$ . If one of them is $7 \large\frac{1}{2}$ find the other

asked Jan 12, 2015 by meena.p

1 answer

What should be added to $\large\frac{19}{27}$ to make it $\large\frac{-13}{15}$

asked Jan 12, 2015 by meena.p

1 answer

Standard form of $\large\frac{192}{-168}$ is

asked Jan 12, 2015 by meena.p

1 answer

$\bigg(\large\frac{a}{b} \times \frac{b}{a} \bigg) = \large\frac{b}{a} \times \frac{a}{b}$ =_________

asked Jan 12, 2015 by meena.p

1 answer

The rational number which is its own negative

asked Jan 12, 2015 by meena.p

1 answer

If $\large\frac{a}{b}$ and $\large\frac{c}{d}$ are two rational such that $\large\frac{c}{d}$ $\neq 0$ then $\large\frac{a}{b} \div \frac{c}{d}$ =________

asked Jan 12, 2015 by meena.p

1 answer

Simplify : $\large\frac{6}{7}$ $-2 +\large\frac{-7}{9}+\frac{19}{21}$

asked Jan 12, 2015 by meena.p

1 answer

Simplify : $\bigg(\large\frac{-3}{2} \times \frac{4}{5}\bigg) +\bigg( \large\frac{9}{5} \times \frac{-10}{3} \bigg) -\bigg(\large\frac{1}{2} \times \frac{3}{4}\bigg)$

asked Jan 12, 2015 by meena.p

1 answer

A rational number is said to be negative if its _________ are negative

asked Jan 12, 2015 by meena.p

1 answer

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