Mathematics worksheet

D. Y. Patil High School, Ambi, Talegaon
Revision Worksheet 3
Class: VII Subject: Mathematics
Chapter: Algebraic Expressions, Exponents and Powers


Q.I Multiple choice questions
1) When x = 0, y = –1, then the value of expression 2x + 2y is

(a) 4 (b) 0 (c) –2 (d) 2

2) The expression xyz is

(a) Monomial (b) Binomial (c) Trinomial (d) Zero polynomial

3) What are the coefficients of x in the expression 8 – x + y?

(a) 1 (b) –1 (c) 8 (d) none of these

4) The number of terms in 4p2q – 3pq2+5 is------

(a) 7 (b) 3 (c) 1 (d) 4

5) Find the value of 50 x 70 x 30

1
(a) 1 (b) (c) 63 (d) 15
24
6) In standard form 56700000 is written as ________________ .

(a) 5.67 x 107 (b) 567 x 107 (c) 5.67 x 105 (d) 567 x 100000

7) The Base in the expression 810 is _______________

(a) 10 (b) 2 (c) 8 (d) 800

8) Simplify and write in exponential form of 2 2x 25

(a) 23 (b) 27 (c) 28 (d) none of these

Q II Solve the following
1) (a) What are the coefficients of x in the following expressions? 4x – 3y, 8 – x + y, y 2x – y, 2z –5xz

(b) What are the coefficients of y in the following expressions? 4x – 3y, 8 + yz, yz 2+ 5, my + m

2) Find the value of the following expressions when n = – 2.

(i) 5n – 2