CBSE Class 7 Mathematics Expressions using Letter Numbers MCQs Set I

Question. Jowar roti costs ₹30 (x plates) and Pulao costs ₹20 (y plates). Which expression tells the total amount earned?
(a) 50xy
(b) 30x + 20y
(c) (30+20)(x+y)
(d) 30y + 20x

Answer: B

Question. The subtraction of 5 times of y from x is
(a) 5x – y
(b) y – 5x
(c) x – 5y
(d) 5y – x

Answer: C

Question. If the shop sells 5 Jowar rotis (x=5) and 10 Pulao (y=10), the total amount earned is?
(a) ₹150
(b) ₹200
(c) ₹350
(d) ₹500

Answer: C

Question. Pushpita gave a national flag to every customer. If p customers bought Champak, q bought Marigold, and r bought both, the total number of flags given is?
(a) p + q + 2r
(b) p + q + r
(c) p x q x r
(d) p + q

Answer: B

Question. A snail climbs u cm during day and slips d cm during night. This happens for 10 days and 10 nights. The algebraic expression for how far the snail is from the start position is?
(a) 10u - 10d
(b) 10(u + d)
(c) 10(u - d)
(d) 10u + d

Answer: C

Question. If the amount the snail slips down is greater than the amount it climbs up (d > u), after 10 days, the snail will be moving where?
(a) Snail will be at the starting position
(b) Snail is below the starting position
(c) Snail is above the starting position
(d) Snail cannot move

Answer: B

Question. Neha owns a flour mill. It takes 20 seconds for the roller mill to start running. Once it is running, each kg of grain takes 16 seconds to grind into power. What will be an arithmetic expression which describes the time taken to grind 6 kg of grain, assuming the machine is off initially?
(a) 2 + 16 × 6 + 10
(b) 16 + 20 × 6
(c) 20 + 16 × 6
(d) 6 + 20 × 16

Answer: C

Question. Radha cycles 5 km daily the first week. She increases the daily distance by z km every week. Her daily distance during the third week will be?
(a) 5 + 3z
(b) 5 + 2z
(c) 5 + z
(d) 5z

Answer: B

Question. A train travels between 4 stations with time t for each segment, and stops for 2 minutes at the 3 intermediate stations. The algebraic expression for total travel time is?
(a) 3t + 2
(b) 4t + 2
(c) 4t + 6
(d) 7t + 6

Answer: C

Question. If the train travel time t = 4 minutes, the total time taken (expression 4t + 6) is?
(a) 10 minutes
(b) 16 minutes
(c) 22 minutes
(d) 24 minutes

Answer: C

Question. Simplify 3a + 9b - 6 + 8a - 4b - 7a + 16. The combination of 'a' terms (3a + 8a - 7a) gives?
(a) 18a
(b) 11a
(c) 4a
(d) 2a

Answer: C

Question. Simplify 3a + 9b - 6 + 8a - 4b - 7a + 16. The combination of number terms (-6 + 16) gives?
(a) 22
(b) 10
(c) -10
(d) 6

Answer: B

Question. The value of 32 - (64 + 16) + 3 × 6 is
(a) 31
(b) -32
(c) -30
(d) 30

Answer: C

Question. The fully simplified form of 3a + 9b - 6 + 8a - 4b - 7a + 16 is?
(a) 4a + 5b + 10
(b) 18a + 13b + 22
(c) 4a - 5b + 10
(d) 10a + 10b

Answer: A

Question. Simplify 3 (3a - 3b) - 8a - 4b - 16. The term 3(3a - 3b) becomes what using the distributive property?
(a) 9a - 9b
(b) 9a + 9b
(c) 6a - 6b
(d) 3a - 3b

Answer: A

Question. What is the fully simplified form of 3 (3a - 3b) - 8a - 4b - 16?
(a) a - 13b - 16
(b) a - 5b - 16
(c) 17a - 13b - 16
(d) a - 13b + 16

Answer: A

Question. Simplify the expression 2 (2x - 3) + 8x + 12. The simplified form is?
(a) 10x + 6
(b) 12x + 6
(c) 12x - 18
(d) 10x - 6

Answer: B

Question. Simplify 8x - (2x - 3) + 12. When removing the brackets, the term - (2x - 3) changes to what?
(a) -2x + 3
(b) -2x - 3
(c) 2x - 3
(d) 2x + 3

Answer: A

Question. Simplify the expression 8h - (5 + 7h) + 9. The simplified final expression is?
(a) h + 4
(b) 15h + 14
(c) h - 4
(d) 15h - 14

Answer: A

Question. If j = 3, then value of 5 j + 10 is
(a) 15
(b) 25
(c) 65
(d) 30

Answer: B