ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 1

MEDIUM

8th ICSE

IMPORTANT

Earn 100

In a bag, there are $20 kg$ of fruits. If $7 \frac{1}{6} kg$ of these fruits be oranges and $8 \frac{2}{3} kg$ of these are apples and rest are grapes. Find the mass of the grapes in the bag.

Important Questions on Rational Numbers

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 2

The population of a city is

6, 63, 432

. If

\frac{1}{2}

of the population are adult males and

\frac{1}{3}

of the population are adult
females, then find the number of children in the city.

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 3

In an election of housing society, there are

30

voters. Each of them gives the vote. Three persons

X, Y

and

Z

are standing for the post of Secretary. If Mr

X

got

\frac{2}{5}

of the total votes and Mr

Z

got

\frac{1}{3}

of the total votes, then find the number of votes which Mr

Y

got.

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 4

A person earns ₹

100

in a day. If he spent ₹

14 \frac{2}{7}

on food and ₹

30 \frac{2}{3}

on petrol. If he save ₹

k

on that day. Find the value of

k

in mixed fraction.

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 5

In an examination,

400

students appeared. If

\frac{2}{3}

of the boys and all

130

girls passed in the examination, then find how many boys failed in an examination

?

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 6

A car is moving at the speed of

40 \frac{2}{3} km / h

. If the car covers

Y k m

distance in

\frac{9}{10} h r s ?

Find the value of

Y

. Write the value of

Y

in mixed fraction.

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 7

If the area of a square lawn is

k m^{2}

whose one side is

5 \frac{1}{9}

m long. Find the value of

k

as mixed rational number.

MEDIUM

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 8

The perimeter of a rectangle is

15 \frac{5}{7} m

. If the length is

4 \frac{1}{7} m,

If its breadth is

k \frac{5}{7}

metre. Find the value of

k

.

EASY

8th ICSE

IMPORTANT

ICSE Understanding Mathematics Class 8>Chapter 1 - Rational Numbers>Exercise>Q 9

Rahul had a rope of

325 \frac{4}{5} m

long. He cut off a

150 \frac{3}{5} m

long piece, then he divided the rest of the rope into

3

parts of equal length. If the length of each part is

k

metre then find the value of

k

as mixed rational number.