CBSE Class 7 Mathematics Expressions using Letter Numbers MCQs Set B

Question. What does the expression s = a + 3 represent?
(a) Multiplying Shabnam’s age by 3
(b) Subtracting 3 from Aftab’s age
(c) Adding 3 to Aftab’s age
(d) Dividing Aftab’s age by 3

Answer: C

Question. If we use letter 'a' and 's' to represent Aftab's age and Shabnam's age, letters like 'a' and 's' are called what?
(a) Arithmetic numbers
(b) Unknown quantities
(c) letter-numbers
(d) Alphabet symbols

Answer: C

Question. If an expression has letter-numbers, for example 'a + 3', this expression is called what?
(a) Arithmetic calculation
(b) Number relation
(c) Algebraic expression
(d) Sum of variables

Answer: C

Question. If a = 23 in the expression s = a + 3, what is the value of s?
(a) 20
(b) 26
(c) 25
(d) 30

Answer: B

Question. The perimeter of a square is 4 times the length of its side. If side length is ‘q', the expression to find the perimeter is?
(a) q + 4
(b) q/4
(c) 4 × q
(d) 4 – q

Answer: C

Question. Parthiv is making L patterns with matchsticks. Every L needs 2 matchsticks. If 'n' is the number of L shapes, the number of matchsticks needed is?
(a) n + 2
(b) 2n + 1
(c) 2 × n
(d) n - 2

Answer: C

Question. Which expression best describes ‘four times a number decreased by 6'?
(a) 4n – 6
(b) 4(n – 6)
(c) 6 – 4n
(d) n – 4 × 6

Answer: A

Question. As a standard practice, when writing algebraic expressions, how do we shorten the writing of '4 × n'?
(a) n4
(b) 4(n)
(c) 4n
(d) 4 + n

Answer: C

Question. Find the value of expression 7k when the letter-number k is given as 4. The value is?
(a) 11
(b) 74
(c) 28
(d) 16

Answer: C

Question. What is the algebraic expression for Aftab's age if s = Shabnam's age?
(a) a = s × 3
(b) a = s + 3
(c) a = s – 3
(d) a = 3 – s

Answer: C

Question. Ketaki buys 'c' coconuts at Rs 35 each and 'j' kg jaggery at Rs 60 per kg. Total amount to be paid expression is?
(a) 35 + 60 + c + j
(b) 35c/60j
(c) c × 35 + j × 60
(d) 95(c + j)

Answer: C

Question. The expression 5m + 3 takes the value 13 when the value of m is?
(a) m = 1
(b) m = 3
(c) m = 2
(d) m = 5

Answer: C

Question. Look at the expressions 5u and 5 + u. The expression 5u means what?
(a) u more than 5
(b) 5 added to u
(c) 5 times the number u
(d) u is 5

Answer: C

Question. If we use letter 'a' and 's' to represent Aftab's age and Shabnam's age, letters like 'a' and 's' are called what?
(a) Arithmetic numbers
(b) Unknown quantities
(c) letter-numbers
(d) Alphabet symbols

Answer: C

Question. What does 2 × n represent if n is the number of L's?
(a) Number of pencils
(b) Total cost
(c) Number of matchsticks
(d) Number of laddus

Answer: C

Question. If an expression has letter-numbers, for example 'a + 3', this expression is called what?
(a) Arithmetic calculation
(b) Number relation
(c) Algebraic expression
(d) Sum of variables

Answer: C

Question. Shabnam is 3 years older than Aftab. If Aftab's age 'a' is 10 years, Shabnam's age using the expression a + 3 will be?
(a) 7 years
(b) 10 years
(c) 13 years
(d) 30 years

Answer: C

Question. The perimeter of a square is 4 times the length of its side. If side length is ‘q', the expression to find the perimeter is?
(a) q + 4
(b) q/4
(c) 4 × q
(d) 4 – q

Answer: C

Question. What is the total cost if c = 10 coconuts and j = 5 kg jaggery?
(a) ₹650
(b) ₹500
(c) ₹350
(d) ₹300

Answer: A

Question. Parthiv is making L patterns with matchsticks. Every L needs 2 matchsticks. If 'n' is the number of L shapes, the number of matchsticks needed is?
(a) n + 2
(b) 2n + 1
(c) 2 × n
(d) n - 2

Answer: C