CBSE Class 7 Mathematics Expressions using Letter Numbers MCQs Set 04

Question. Venkatalakshmi's roller mill takes 10 seconds to start. Grinding y kg takes 8 seconds per kg. If y=5, the total time taken is?
(a) 40 seconds
(b) 58 seconds
(c) 50 seconds
(d) 48 seconds

Answer: C

Question. Write algebraic expression for '5 more than a number'. Use letter 'm'.
(a) 5m
(b) 5 - m
(c) m + 5
(d) m/5

Answer: C

Question. Write algebraic expression for '4 less than a number'. Use letter 'p'.
(a) 4 - p
(b) p - 4
(c) 4p
(d) p/4

Answer: B

Question. What is the simplified form of 12n - 4n?
(a) 8n
(b) 16n
(c) 4n
(d) n8

Answer: A

Question. Write algebraic expression for '2 less than 13 times a number'. Use letter 'q'.
(a) 2q - 13
(b) 13q + 2
(c) 13q - 2
(d) 13(q - 2)

Answer: C

Question. The algebraic expression 8 x x + 3 x y is often written as?
(a) 83xy
(b) 8x + 3y
(c) 11xy
(d) 24xy

Answer: B

Question. We can use swapping and grouping terms when evaluating expressions because it does not change the what?
(a) Numbers used
(b) Operations performed
(c) Value of the expression
(d) Complexity

Answer: C

Question. Evaluate the arithmetic expression 23 - 10 x 2.
(a) 1
(b) 3
(c) 13
(d) 26

Answer: B

Question. What is the simplified form of (40x + 75y) - (6x + 10y)?
(a) 34x + 65y
(b) 34x – 65y
(c) 46x + 85y
(d) 34x – 85y

Answer: A

Question. Evaluate the arithmetic expression 68 - (18 + 13).
(a) 37
(b) 83
(c) 50
(d) 13

Answer: A

Question. Algebraic expressions take number values when letter-numbers are replaced by numbers. This is called?
(a) Substitution
(b) Calculating terms
(c) Evaluating the expression
(d) Simplifying

Answer: C

Question. In the sequence 4, 8, 12, 16..., the 29th term will be calculated by which operation?
(a) 29 + 4
(b) 29 - 4
(c) 4 x 29
(d) 4/29

Answer: C

Question. If a = -4, then 10 - a is mistakenly given as 6. The correct value is?
(a) 14
(b) -6
(c) -14
(d) 6

Answer: A

Question. What is Charu's total score in the three rounds?
(a) 7p – 3q + 8p – 4q + 6p – 2q
(b) 21p – 9q
(c) 15p – 5q
(d) 20p – 9q

Answer: B

Question. If d = 6, then 3d is mistakenly given as 36. The correct value should be?
(a) 9
(b) 18
(c) 30
(d) 63

Answer: B

Question. If r = 8, the expression 2r + 1 has the value?
(a) 28
(b) 17
(c) 21
(d) 16

Answer: B

Question. If j = 5, the expression 2j has the value?
(a) 25
(b) 10
(c) 7
(d) 52

Answer: B

Question. The perimeter of a rectangle with length l and breadth b can be written as 2l + 2b. This expression is called the what form of l + b + l + b?
(a) Final form
(b) Extended form
(c) Simplified form
(d) Perimeter form

Answer: C

Question. What is the simplified form of 4(x + y) - y?
(a) 4x + y
(b) 4x + 3y
(c) 4x + 5y
(d) 4x – y

Answer: B

Question. In the expression 5 x c + 3 x c + 10 x c, the number c is added how many times total?
(a) 5 times
(b) 18 times
(c) 10 times
(d) 3 times

Answer: B