Maths Practice Question Paper PDF

School Home MATHS Class 07 - Mathematics Time Allowed:...

School Home MATHS Class 07 - Mathematics Time Allowed: 2 hours Maximum Marks: 40 1. The length of wingspans of different species of birds is given below. Species of birds Blue jay Golden eagle Seagull Albatross Length of wingspans 41 100 m 2 1 2 m 1 7 10 m 3 3 5 m How much longer is the wingspan of a Golden eagle than the wingspan of a Blue jay? a) 209 100 m b) 209 100 cm c) 9 100 m d) 215 100 cm 2. Assertion (A): An algebraic expression which contains three unlike terms is called trinomial expression. Reason (R): Contact is also consider as a seperate term. a) Both A and R are true and R is the correct b) Both A and R are true but R is not the explanation of A. correct explanation of A. c) A is true but R is false. d) A is false but R is true. 3. Identify the trinomials from the options given below. a) y + 5 b) x + 2y + 3z c) 3x d) x + 5y 2 5 4 4. Simplify: 3 ×4 ×x 4 3 9. 3 ×4 ×x a) 22 b) 32 2 c) 2 4 5 d) 42 3 ×x 1 (24) 3 2 5. The value of {8 − is 2 3 } a) b) 1 1 8 4 c) 1 16 d) 16 6. Assertion(A): Express (-5x)4 in exponential form. Its form can be given as (-5)4 × (x)4. Reason(R): For any non-zero integer a, am × bm = (ab)m. a) Both A and R are true and R is the correct b) Both A and R are true but R is not the explanation of A. correct explanation of A. c) A is true but R is false. d) A is false but R is true. 7. How many lines of symmetries are there in a square? a) 4 b) 2 1/3 ---  c) 3 d) 1 8. A regular octagon has: a) 2 lines of symmetry b) 6 lines of symmetry c) eight lines of symmetry d) one line of symmetry 9. How many lines of symmetry are there in an equilateral triangle. Choose the correct option from the options given below? a) 1 b) 6 c) 4 d) 3 10. A solid with a circular mouth and a tapering tip used by the ice-cream vendor to fill ice-cream is ________. a) cube b) cylinder c) cuboid d) cone 11. The number of faces of a square pyramid is ________. a) 4 b) 6 c) 5 d) 7 12. State True or False: (a) Every polynomial is a monomial. 13. Express the number as a product of powers of its prime factors: 9000 14. Draw, wherever possible, a rough sketch of a triangle with both line and rotational symmetries of order more than 1. 15. A polyhedron has 25 faces and 12 vertices. How many edges does the polyhedron have? 16. The product of two rational numbers is 18. If one of the numbers is -12, find the other. 17. What are the coefficients of x in the following expressions? 4x – 3y, 8 – x + y, y2 x – y, 2z – 5xz 4 (− 1 ) × 625 18. Simplify 2 4 16. 5 1 ( ) × 2 16 19. Simplify:- 4x(7x - 3) -2. find its value if x =. 1 4 20. The weight of a poppy seed is 0.0002985g. What will be the weight of 1 cup of poppy seeds, if the cup can hold approximately 5,00,000 poppy seeds? Express the answer in scientific notation. 21. Read the text carefully and answer the questions: Once Keshav asked the Maths teacher,” What are rational numbers and how we can understand them? The teacher smiled and replied as following: The word ‘rational’ arises from the term ‘ratio’. You know that a ratio like 3:2 can also be written as , Here 3 3 2 and 2 are natural numbers. 2/3 --- Thus Natural numbers ,Whole numbers and integers are also rational numbers Equivalent rational numbers By multiplying the numerator and denominator of a rational number by the same none zero integer, we obtain another rational number equivalent to the given rational number. For example =( )×( )= is equivalent to 3 3 2 6 3 5 5 2 10 5 And −7 8 =( −7 8 )×( )= 5 5 −35 40 is also the equivalent to −7 8 This is exactly like obtaining equivalent fractions. (a) Which of the following is a rational number? a) All of these b) 6 7 c) 10 d) 0 (b) Which of the following is an irrrational number? – a) √3 b) 10 c) −8 9 d) 6 7 (c) Which of the following is a rational number equivalent to ? 3 5 a) 3 10 b) 6 10 c) d) 9 6 10 5 (d) A rational equivalent to =. 9 18 11 22 a) True b) False (e) π is a/an ________ number. 3/3 ---