Question

Rudra Public School
Periodic test 1st
Class-8th
Subject- Maths M.M= 20

Multiple choice questions: ( 1× 15= 15 marks)

Q.(1)Multiplicative inverse of 5/18 is -

(a) 9/5 (b) 18/5 (c) 7/5 (d) -5/18

Q.(2) Find the value of t, if t/5 = 10

(a) t= 5 (b) t= 50 (c) t= 15 (d) t= 20

Q.(3) Additive inverse of 3/5 is -

(a) -3/5 (b) 5/6 (c) -5/3 (d) 3/5

Q.(4) Reciprocal of 1/a is -

(a) p/2 (b) a (c) -a (d) 1/5

Q.(5) P/q × r/s =

(a) pq/qs (b) pr/qs (c) p/q (d) 0

Q.(6) Find the value of x, if
2x - 1 = 14 - x
(a) x = 15 (b) x= 30 (c) x= 5 (d) x= 6

Q.(7) Zero has __________ reciprocal.

(a) many (b) no (c) 5 (d) 10

Q.(8) The product of two rational numbers is always a __________.

(a) zero (b) rational number
(c) negative (d) 1

Q.(9) 3/5+ 5/10 =

(a) 11/10 (b) 2/5 (c) 8/10 (d) 9/10

Q.(10) 14/30 ÷ 7/6

(a) 3/6 (b) 7/6 (c) 14/ 30 (d) 2/5

Q.(11) Find the value of z, if 4z+3 = 6+ 2z

(a) 3/2 (b) 6 (c) 5 (d) 2

Q. (12) Three consecutive integers add up to 81. What are these integers?

(a) 21,22, 25 (b) 20,40,31 (c) 26,27,28 (d) 35,36,20

Q.(13) Sum of two numbers is 40. If one exceeds the other by 10, find the numbers.

(a) 15,25 (b) 10,30 (c) 10, 25 (d) 35, 5

Q.(14) Two numbers are in the ratio 7:5. If they differ by 18 , what are the numbers?

(a) 10,20 (b) 63, 45 (c) 30,10(d) 5,35

Q.(15) If 8k = 3k + 50, then find the value of k.

(a) 10 (b) 20 (c) 30 (d) 40

Short answer type questions. (1× 5 = 5 marks)

Q.(16) Find five rational numbers between
2/3 and 4/5.

Q.(17) Represent these numbers on the number line. (i) 7/8 (ii) -4/7

Q.(18) The ages of Rahul and Haroon are in the ratio 5:7. Four years later the sum of their ages will be 56 years. What are their present ages?

Q.(19) The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?

Q.(20)The difference between the two numbers is 48. The ratio of the two numbers is 7:3. What are the two numbers?​

Answer 1

Answer:

1. -5/18
2. t = 50
3. -3/5
4. a
5. pr/qs
6. x = 15
7. no
8. rational number
9. 11/10
10. 2/5

I will give u answer of only 10 questions...

Hope it helps u....