Question

SECTION – A



Q1 – Q10 are multiple choice questions. Select the most appropriate answer from the given options: 1 X 10 = 10



To get product 1, we should multiply 7⁄23 by

7/23 b) 23/7 c) (-23)/7 d) (-7)/27



a X b = __________ for nay two rational numbers a and b

b + a b) b – a c) b X a d) None of these



if 2x – 3 = x + 5, then x = _________________

2 b) 5 c) 3 d) 8



Which of the following expression is monomial?

a + b b) ax3 + bx2 + cx + d c) x2y – xy2 + y2 d) 3xy



5lm X 19x2yz = ______________.

95lmx2yz b) 24lmx2yz c) 14lmx2yz d) 190lmx2y2



Common factor of 90 and 120 is

90 b) 120 c) 30 d) 1



The sum of –7pq and 2pq is

–9pq b) 9pq c) 5pq d) –5pq



The highest power of the variable appearing in linear equation is __________.

1 b) 2 c) 0 d) 4



Like term as 6x3y2 is

+4x2y2 b) –4x3y2 c) 6px3y2 d) 4x3y



(x – 2)(x + 2) = _______________.

x2 - 4 b) x2 + 4 c) x – 2 d) x + 2



Q11 – Q15 are filling in the blanks: 1 X 5 = 5



(a + b)2 = _______________

Zero has ______________ reciprocal.

The area of a rectangle = ________________ X _________________.

30x2y2z ÷ 15xy2 is equal to _____________

1 is a factor of any number (true / false) ____________.



Q16 – Q20 are answer the following: 1 X 5 = 5



Write the additive inverse of (-8)⁄7.

Is t = 5 is the solution of the equation 5t + 3 = 24.

Find the value of z in: 7 = z + 4.

Solve: (-15)/20 ÷ 3/5

Find the error in 2(x – 2) = 2x – 2.



SECTION – B



Q21 – Q26 are Solve the following: 2 X 6 = 12



Solve: 8x + 3 = 27 + 2x

Represent (-2)/7 on number line.

Find the product (2/3 xy) X ((-9)/10 x^2 y^2 )

Factorize: x2 + xy + 8x + 8y



OR



Find the factors of y2 – 7y + 12

If you subtract 2 from a number and multiply the result by 2 you get 4. What is the number?



OR



A number is 10 more than the other number and their sum 74. Find the numbers.

Find the squares by using the identity: (b – 7)2



 

SECTION – C



Q27 – Q34 are Solve the following: 3 X 8 = 24



Find 8 rational numbers between (-2)⁄5 and 1⁄2

Two numbers are in the ratio 5 : 8. If the sum of the numbers is 182. Find the numbers.



OR



Arjun is twice as old as Shriya. Five years ago his age was three times Shriya age. Find their present ages.

Subtract: 3a (a + b + c) – 2b (a – b + c) from 4c (–a + b + c)



OR



Simplify: (x2 – 5) (x + 5) + 25

Factorize: 3a2 + 9a + 6

Classify the following polynomials as monomials, binomials and trinomials.

5xyz2 – 3zy

a/2 + b/2 – ab

pqr

Solve: 1/4 x + 1/6 x = x – 7

Using the identify find the value of 1032.

Factorize: (x2 – 2xy + y2) – z2



OR



Factorize: x4 – b4



 

SECTION – D



Q35 – Q40 are Solve the following: 4 X 6 = 24



Solve: (2/5) X ((-3)/7) – 1/6 X 3/2 + 1/14 X 2/5

Solve the equation and find the value of ‘m’

(2m + 7)/5- (3m + 11)/2 = (2m + 8)/3 - 5



OR



Find the value of ‘t’ by solving linear equation and check your answer: 8t + 4 = 3(t – 1) + 7

Factorize the expressions and divide them as directed: (m2 – 14m – 32) ÷ (m + 2)



OR



Find: 4yz(z2 + 6z – 16) ÷ 2y(z + 8)

Using suitable identities, find the products of the following:

(9.8)2

95 X 103

Simplify a3(a4 + a2 + 1) + 5and find its value for

a = 0

a = 1

a = –1

The denominator of a rational number is greater than its numerator by 8. If the numerator is increased by 17 and the denominator is deceased by 1, the number obtained is 3/2 . Find the rational number.





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Answer 1

Answer:

Q...Arjun is twice as old shriya five years ago his age was three times Shriya age find their percent age.

Q...Subtract : 3a (a+b+c) -2b (a-b+c) from 4c (-a+b+c)

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