Page 129 - Maths Skills - 7

Algebraic Expressions 127

ASSESSMENT TIME

COMPETENCY BASED QUESTIONS D. Case Study Based Questions
A. Multiple-Choice Questions One day, Ravi went to market to purchase general
1. If one-sixth of a number is equal to 4, then the things. He brought one pen, one cricket bat, one
football, one pair of shoes and one shirt.
number is:
(i) 24 (ii) 6
4
4
(iii) (iv) 42
6 Cricket Bat
2. For what value of x, 6x – 14 and 4x – 10 are ` 5x – 11 Football
2
equal? ` 7x – 9
(i) 2 (ii) 3
(iii) 4 (iv) 6
3. If 17 is subtracted from a number, the result is
39, then the number is:
(i) 65 (ii) 56 Shoes Pen
Shirt
(iii) 48 (iv) 100 ` x + 5 ` 6x – 2 ` x
2
4. If the sum of two consecutive odd numbers is
32, the smaller number is: Answer the following questions on the basis of the
(i) 15 (ii) 17 above data.
(iii) 19 (iv) 21 1. How much money did he spend in total?
2. If he had ` (10x – 7x + 15) in total in his wallet,
2
B. Fill in the Blanks how much money was left after buying all
1. An algebraic expression is a combination of these items?
_____________and variables.
2. Expression 3a + 3b – 3c is a _____________. E. Assertion-Reason Based Questions

3. A term in an algebraic expression having no Directions for Questions 1 to 3: In each of the
questions given below, there are two statements
literal factor is called a _____________. marked as Assertion (A) and Reason (R). Mark your
4. Degree of polynomial 5x – 4y is ___________. answer as per the codes provided below:
8
3
5. In – 8ab, the co-efficient of a is ____________. (a) Both A and R are true and R is the correct
explanation of A.
C. Write ‘T’ for true and ‘F’ for false statements
(b) Both A and R are true but R is not the correct
1. In – 2x, the constant term is –2. explanation of A.
(c) A is true but R is false.
2. 7a + 3p is a trinomial.
2
(d) A is false but R is true.
3. The solution of 8x + 5 – 3x = 3x – 5 is – 5. Q. 1. Assertion (A): The expression x + 9y + xy – 11

4. (5x – 7) – (3x – 5) = 2x – 12 is in two variables.
5. If the difference of two numbers is 25, then the Reason (R): The variables in x + 9y + xy – 11
numbers are x and 25 + x. are 11, 9.