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CBSE Class 8 Maths Worksheet

Linear Equation in one variable

1.
Dev has 3 times as many four-rupee coins as he has ten -rupee coins. If he has in all a sum of Rs 154 , How many coins of each denomination does he have ?
2.
Solve: 5y - 3/2y + 1 = 2/5
3.
Solve: 3(5x-7)-2(9x-11)=4(8x-13)-17
4.
The ages of Sheemaz and Sohaib are in the ration 5:7 .Four years later the sum of their ages will be 56 years. What are their present ages?
5.
Solve: y-y-1/2=1-y-2/3
6.

Azlan's age is three times his sons age.Ten years ago he was five times his sons age. Find the present ages.

A)

20 , 50

B)

15 , 60

C)

60 , 20

D)

20 , 40

7.

Mina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8 the result now obtained is 3 times the same number she thought of. what is the number.?

A)

4

B)

5

C)

6

D)

7

8.

Using a2 – b2 = (a + b) (a – b), find 51Sq – 49sq

A)

400

B)

300

C)

9.
A Grandfather is ten times older than his granddaughter. He is also 54 years older then her. Find the present ages.
10.

The difference between two whole numbers is 66. The ratio of the two numbers is 2 : 5. The two numbers are:

A)

60 and 6

B)

100 and 33

C)

110 and 44

D)

99 and 33

11.

Find the squares by using the identities. (2hy + 5y)2

A)

4h^2 y^2 + 10hy^2 + 25y^2

B)

4h^2 y^2 + 20hy^2 + 25y^2

C)

2h^2 y^2 + 20hy^2 + 25y^2

D)

4h^2 y^2 + 20hy^2 + 5y^2

12.
The length of a rectangle exceeds its breadth by 8 cm if length and breadth increases by 6 cm the area of the new rectangle will be 162 sq. cm more than the given rectangle. Find the breadth of the given rectangle.
13.

Subtract 4p2q – 3pq + 5pq2 – 8p + 7q – 10 from 18 – 3p – 11q + 5pq – 2pq2 + 5p2q

A)

28+5p-18q+8pq-7pq2+p2q

B)

8+5p-18q+8pq-7pq2+p2q

C)

14.
Solve: 4p-6=p+4
15.
Solve: 9c /7-6c=15
16.

Avinash's Mother present age is 6 times avinash's present age .Avinash age 5years from now will be one third of his mother's present age. What are their presents ages?

A)

Avinash=6 Mother=30

B)

Avinash=5 Mother=30

C)

Avinash=10 Mother=40

D)

Avinash=20 Mother=60

17.

Subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3

A)

8a-2ab+8b-15

B)

8a-2ab+2b-15

C)

16a-2ab+2b-15

D)

8a-16ab+2b-15

18.
Solve: 3(x-3)=5(2x+1)
19.
Ayesha has a total of Rs. 590 as currency notes in the denominations of Rs 50 Rs 20 and Rs 10. The ratio of the number of rs 50 notes and Rs 20 notes is 3:5. If she has a total of Rs 25 notes , how many notes of each denomination she has ?
20.
Solve: 0.4z - 3/1.5z + 9 = -7/5

CBSE Class 8 Maths Worksheet

Linear Equation in one variable

Answers

1.
x = 7 and 3x =21
2.
(17/24)
3.
x=2
4.
sheemaz = 20 Sohaib = 28
5.
y=7/5
6.
Option C
7.
Option A
8.
Option C

9.
Granddaughter's age = 6 years , Grandfather's age = 60
10.
Option C
11.
Option B

12.
14.5 cm
13.
Option A

14.
5
15.
c=35/33
16.
Option B
17.
Option B

18.
x=-2
19.
Rs 50 =6 ,Rs 20 = 10 and Rs 10 = 9
20.
(-96/25)

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