CBSE Half Yearly Sample Paper 2020-21 Mathematics for class 9
Time: 3:00 hour Subject- Mathematics M.M.-80
General Instructions:
- This question paper contains 37 questions.
- All questions are compulsory.
- Question 1 to 16 are very short answer type questions. Each question carries 1 mark.
- Question 17 to 23 are short answer type questions. Each question carries 2 mark.
- Question 24 to 33 are long answer type questions. Each question carries 3 mark.
- Question 34 to 37 are very long answer type questions. Each question carries 5 mark.
(1 mark questions)
1- Write the co-efficient of x3 in x+3x2-5x3+x4.
2- Write the constant term in ᴨ/2x2+7x-2/5ᴨ.
3- Determine the degree of y2(y-y3).
4- Give an example of a monomial of degree 5.
5- Rewrite x-2x2+8+5x3 in standard form.
6- If a+b+c=0,then find a3+b3+c3
7- How many linear equations can be satisfied by x=2 and y=3?
8- If which quadrant does the point(-7,-4)lie?
9- In ΔABC,it is given that base=12cm and height=5cm,find its area?
10- Each side of an equilateral triangle is 8cm.find its area?
11- If the point(3,4)lies on the graph of 3y=ax+7,then find the value of a?
12- Find the class mark of the class 100-120.
13- Find the mode of the data 15,17,15,19,14,18,15,14,16,15,14,20,19,14,15
14- What is the probability of an impossible event?
15- Let E be an event ,then find P(not E)
16- Find the supplement of 1340.
(2 marks questions)
17- Find the value of the polynomial 5x-4x2+3 at x=0
18- Using suitable identity to find (x+4)(x+10)
19- The cost of a notebook is twice the cost of a pen.write a linear equation in two variables to represent this statement.
20- The blood groups of 30 students of class VIII are recorded follows: A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O,A,AB,O,A,A,O,O,AB,B,A,0,B,A,B,O
Represent this data in the form of frequency distribution table.
21- In a cricket match, a batswoman hits a boundary 6 times out of 30 balls. Find the probability that she did not hit a boundary.
22- Find the zero of the polynomial in P(x)=x+5
23- Find the value of K, if x=2,y=1 is a solution of the equation 2x+3y=k.
(3 marks questions)
24- Find p(0), P(1) and P(2) for P(y) =y2-y+1
25- Find the remainder when x3-ax2+6x-a, is divided by x-a.
26- Evaluate the product without multiplying directly of (103×107).
27- Express: 2x+3y=9.3 5⎺ the linear equation in the form of ax+by+c=0and indicate the values and a, b and c.
28- Give the equations of two lines passing through (2,14).how many more such lines are there and why?
29- In the figure ,if AB‖CD,EF⏊ CD and ang GED=1260, Find / AGE, / GEF and / FGE.
30- Find the value of K, if x-1 is a factor of p(x)= x2+x+k
31- Factorise: 12x2-7x+1
32- Without actually calculating the cubes, find the value of (-12)3+(7)3+(5)3
33- Give the geometric representations of y=3 as an equation.
i) in one variable
ii) in two variable
(5 marks Questions)
34- Factorize: x3-3x2-9x-5
35- In which quadrant or on which axis do each of points (-2,-4),(3,-1),(-1,0), (1,2) and (-3,-5)lie? Verify your answer by locating them on the Cartesian plane.
36- Sides of a triangle are in the ratio of 12:17:25and its perimeter is 540cm.Find its area.
37- The following numbers of goals were scored by a team in a series of 10 matches: 2,3,4,5,0,1,3,3,4,3. Find the mean, median and mode of these scores.