Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

If y be the reciprocal of x, then the reciprocal of y² in terms of x will be ______.

The reciprocal of `2/5 xx ((-4)/9)` is ______.

The reciprocal of `(-5)/7` is ______.

The multiplicative inverse of `4/3` is ______.

If a ≠ 0, the multiplicative inverse of `a/b` is `b/a`.

The multiplicative inverse of `(-3)/5` is `5/3`.

The reciprocal of a non-zero rational number `q/p` is the rational number `q/p`.

1 is the only number which is its own reciprocal.

–1 is not the reciprocal of any rational number.

The reciprocal of x^–1 is `1/x`.

Simplify

`32/5 + 23/11 xx 22/15`

Simplify

`3/7 xx 28/15 ÷ 14/5`

Simplify

`3/7 + (-2)/21 xx (-5)/6`

Simplify

`7/8 + 1/16 - 1/12`

The cost of `19/4` metres of wire is Rs. `171/2`. Find the cost of one metre of the wire.

A train travels `1445/2` km in `17/2` hours. Find the speed of the train in km/h.

If 16 shirts of equal size can be made out of 24 m of cloth, how much cloth is needed for making one shirt?

`7/11` of all the money in Hamid’s bank account is Rs. 77,000. How much money does Hamid have in his bank account?

A `117 1/3` m long rope is cut into equal pieces measuring `7 1/3` m each. How many such small pieces are these?

`1/6` of the class students are above average, `1/4` are average and rest are below average. If there are 48 students in all, how many students are below average in the class?