CBSE Class 7 Mathematics Expressions using Letter Numbers MCQs Set C

Question. After simplifying Charu's total score for three rounds, 21p - 9q is the final expression. What is the value of q if there is no penalty?
(a) 1
(b) 3
(c) 9
(d) 0

Answer: D

Question. 6a equals
(a) 6 + a
(b) 6 × a
(c) a × a × a × a × a × a
(d) 6 ÷ a

Answer: B

Question. Charu's total score is 21p - 9q. Krishita's score is 23p - 7q. How much more did Krishita score than Charu? The expression for the difference is?
(a) (21p – 9q) + (23p – 7q)
(b) (23p – 7q) – (21p – 9q)
(c) 21p - 23p
(d) 9q - 7q

Answer: B

Question. Simplify the expression 4(x + y) - y using the distributive property first. It becomes 4x + 4y - y. What is the final simplified form?
(a) 4x + 5y
(b) 4x - 3y
(c) 4x + 3y
(d) 4x + 4y

Answer: C

Question. The expression 5u means 5 times the number u. The expression 5 + u means 5 more than the number u. Are these expressions equal?
(a) Yes, they are always equal
(b) No, they are usually different values
(c) Yes, when u=1
(d) Yes, when u=5

Answer: B

Question. When u = 2, the value of the expression 5u is?
(a) 7
(b) 10
(c) 25
(d) 52

Answer: B

Question. When u = 2, the value of the expression 5 + u is?
(a) 10
(b) 25
(c) 7
(d) 52

Answer: C

Question. 11 more than three times the number x can be represented as
(a) 11 + x + 3
(b) 11x – 3
(c) 3x + 11
(d) 11x + 3

Answer: C

Question. The expression 10y - 3 is short for 10 x y - 3. In words, this means?
(a) 10 times the difference between y and 3
(b) 3 less than 10 times y
(c) y is multiplied by 10 and then 3 is added
(d) 10 plus y minus 3

Answer: B

Question. The expression 10(y - 3) is short for 10 x (y - 3). In words, this means?
(a) 10 times the number y minus 3
(b) 10 times (3 less than y)
(c) 3 less than 10 times y
(d) 10 times the sum of y and 3

Answer: B

Question. If y = 7, the value of 10y - 3 is?
(a) 73
(b) 4
(c) 70
(d) 67

Answer: D

Question. If y = 7, the value of 10(y - 3) is?
(a) 67
(b) 73
(c) 4
(d) 40

Answer: D

Question. A picture has numbers arranged in rows: 4 x 3 (top row), r, s (second row), r, s (third row), 4 x 3 (bottom row). Adding like terms together gives a sum of 8 x 3 + r + r + s + s. This simplifies to?
(a) 24rs
(b) 2r + 2s + 24
(c) r² s² 24
(d) 2r + 2s + 8

Answer: B

Question. If each match box contains 40 matchsticks, the number of matchsticks required to fill n such boxes is
(a) 40 + n
(b) 40n
(c) 40 ÷ n
(d) 40 – n

Answer: B

Question. Simplify the expression p + p + p + p.
(a) p⁴
(b) 4p
(c) p + 4
(d) p

Answer: B

Question. Simplify the expression p - q + p - q.
(a) 2p - 2q
(b) 2p + 2q
(c) 0
(d) p - q

Answer: A

Question. Simplify the expression p + q - (p + q).
(a) 2p + 2q
(b) 2q
(c) 0
(d) p - q

Answer: C

Question. Simplify the expression 2d - d - d - d.
(a) d
(b) 0
(c) -d
(d) 3d

Answer: C

Question. If the length of each side of a regular hexagon is x metres, then the perimeter of given hexagon is
(a) (x + 6) metres
(b) (x + 6) metres
(c) (x – 6) metres
(d) (6 × x) metres

Answer: D

Question. Simplify the expression 2d - d - (d - c).
(a) c
(b) 2d - 2c
(c) d
(d) 2d

Answer: A