CBSE Class 7 Mathematics Algebraic Expression Worksheet Set 02

Question. Add the like terms : (2/3) x² y, (-3/2) x² y, (2/7) x² y³
Answer : (5/21)x²y

Question. Add the unlike terms : 1x² , 2y, 3t, 4x²
Answer : (2y + 3z)

Question. Subtract 24ab – 10b + 18a from 26ab – 8b – 7a.
Answer : 2ab + 2b – 25a

Question. Evaluate x/5 - 5/5 when x = 2 y = –3
Answer : 1

Question. Write the coefficient of y² of algebraic expression.
2x²y – 15xy² + 7y²
Answer : (–15x, 7)

Question. A dd th e term s : x² and –3y²
Answer : x² – 3y²

Question. Subtract x + y from (3/2)x - (5/2)y
Answer : (x/2 - 7/2)

Question. If Z = 5 find the value of 2 – 3 (4 – Z)
Answer : 5

Question. Find the value of 3 (2a + b) if a = 2, b = –1.
Answer : 9

Question. What should be added to x² + y² to get 2x² + 3xy?
Answer : x² + 3xy + y²

Question. Add the algebraic expression :
3x + 11 and –2x + y
Answer : (x + y + 11)

Question. Find the value of the given algebraic expression when x = –2, 5x² + 4x – 2
Answer : 10

Question. What should be added into x² + 2x to obtain x2 + 9?
Answer : –2x + 9

Question. Add 2x² – 3x + 1 to the sum of 3x² – 2x and 3x + 7.
Answer : 5x² – 2x + 8

Question. Find the value of Algebric Expression when x = 2 x² – 3x + 5
Answer : 3

Question. Find the value of 7a – 4b when a = 2 b = – 2
Answer : 22

Question. Find the value of 5x + 3 if x = 9.
Answer : 48

Question. If a side of an equilateral triangle is 7x units then find the perimeter of the triangle.
Answer : 21x units

Question. If P = –6 find the value of 2P²/3 - 1
Answer : 23

Question. Find the value of the given algebraic expression when x = –2, 10x – 2
Answer : –22

Question. Find the value of the following expression for x = 2
15x – 5x²
Answer : 10

Question. If a + b = 5, find the value of (1/1)a (1/2) b
Answer : 5/2

Question. Find the perimeter of a square whose side is 4a cm.
Answer : 16a cm

Question. Find the perimeter of a regular pentagon whose side is 4x cm.
Answer : 20x cm

Question. Simplify : 2x - {5y - (x - 2y)} 
Answer : 3x – 7y

Question. Simplify :
(i) 12a²b + 3ba²
(ii) Also find the coefficient of the result.
Answer : (15a²b, 15)

Please refer to attached file for CBSE Class 7 Maths Worksheet - Algebraic Expression (2)