RBSE Class 8 Maths Board Paper 2018 English Medium

RBSE Class 8 Maths Board Paper 2018 English Medium are part of RBSE Class 8 Maths Board Model Papers. Here we have given Rajasthan RBSE Class 8 Maths Board Paper 2018 English Medium.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 8
Subject	Maths
Paper Set	Board Paper 2018
Category	RBSE Model Papers

Rajasthan RBSE Class 8 Maths Board Paper 2018 English Medium

Time: 2½ Hours
Maxim Marks: 80

General Instructions to the Examinees

1. Candidates must first, write their Roll No. on the question paper compulsorily.
2. All questions are compulsory.
3. Write answer to each question in the given answer book only.
4. Answers of the questions with internal division should be written at one place.
5. Draw a table in your answer-book and give answer of questions number 1 to 6 (M.C.Q.s) in it.
6. Weightage of the question is written infront of the question.

Question 1.
Additive inverse of rational number \(-\frac {3}{5}\) is : [1]
(a) 0
(b) 1
(c) \(\frac {3}{5}\)
(d) \(-\frac {5}{3}\)

Question 2.
Like term of expression 7x²yis : [1]
(a) 7 xy
(b) -10 x²y
(c) 7
(d) 7x²

Question 3.
The formula for sum of interior angles of n-sided polygon is : [1]
(a) (n – 4) x 180°
(b) (n – 2) x 90°
(c) (n – 3) x 180°
(d) (n – 2) x 180°

Question 4.
Number of faces in a cube : [1]
(a) 12
(b) 8
(c) 6
(d) 10

Question 5.
Which is not a property of rhombus : [1]
(a) all sides equal
(b) diagonals equal
(c) diagonals bisects each other
(d) diagonals are perpendicular to each other

Question 6.
Probability of getting a even number when a dice is thrown is : [1]
(a) \(\frac {1}{2}\)
(b) \(\frac {1}{6}\)
(c) \(\frac {1}{3}\)
(d) 1

Question 7.
Find cube root of 9261 by prime factor method. [2]

Question 8.
Convert following ratios into percentage: [2]

1. 2 : 5
2. 3 : 4

Question 9.
Factorize the expression m² -10 m + 21. [2]

Question 10.
Find number of edges in a polyhedron which have 9 vertices and 9 faces. [2]

Question 11.
Answer the following questions by seeing the graph given below : [2]

1. Write coordinates of vertices A and D of square ABCD.
2. Write length of diagonal BD.

Question 12.
Express in standard form : [4]

1. 15,00,00,000
2. 0.0000067

Question 13.

1. Find the value of A. Where A is a digit.
   \(\begin{array}{r} { 1{ \quad A } } \\ { \times \quad { A } } \\ \hline 9{ \quad A } \\ \end{array}\)
2. Find A and B. Where A and B are digits.
   \(\begin{array}{r} { { A\quad 2 } } \\ { \times \quad { 6\quad 3\quad 7 } } \\ \hline B\quad 2{ \quad A } \\ \end{array}\) [4]

Question 14.
Multiply by using Nikhilam formula : [4]
103 × 103 × 103

OR

Divide by using Dhwajank Method : [4]
18542 ÷ 52

Question 15.
Factorize the expression and divide : [4]
(z² – 4z – 12) ÷ (z + 2)

Question 16.
Find the values of unknown angles x, y, z and w in the following figure: [4]

Question 17.
Area of a rhombus ABCD is 264 cm². If length of its one diagonal AC = 24 cm then find length of diagonal BD. [4]

Question 18.
Find the product using suitable identity : [4]

1. (5x – 3) (5x + 3)
2. 103 × 99

Question 19.
Length of a rectangle exceeds its breadth by 3 meters. If its perimeter is 54 meter then find its length and breadth. [4]

Question 20.
Find the number of sides of a regular polygon if its each exterior angle is 45°. [4]

Question 21.
Following pie-chart represents percentage of penalties on various mistakes of automobile drivers. [4]

With the help of pie-chart answer the following questions :

1. Write total percentage of penalties on dangerious driving and driving without helmet.
2. Write difference of percentage of penalties on driving by minor and using mobile phone while driving.

Question 22.
Find compound interest of Rs. 24,000 for 1½ years at the rate of 8% per year, when interest is calculated yearly. [6]

OR

The population of a town increases at annual rate of 8%. If present population of town is 17,496 then find population of town before 2 years.

Question 23.
Construction a rhombus PQRS whose diagonals are PR = 8 cm and QS = 10 cm. [6]

Question 24.
Curved surface areaa of a cylinder is 880 m², whose height is 10 m. Find volume of cylinder. \(\left( \Pi =\frac { 22 }{ 7 } \right) \) [6]

OR

Determine side of a cube whose total surface area is 1014 cm². Find its volume.

Question 25.
According to the following table, draw a graph between side and perimeter of square: [6]

Side (in cm)	4	5	6	7
Perimeter (in cm)	16	20	24	28

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