CBSE Class 7 Mathematics Integers MCQs Set B

Question. What will be multiplicative inverse of – 8
(a) 8
(b) 1/8
(c) 1/ – 8
(d) 0

Answer : C

Question. Which number is multiplicative identity for the whole numbers
(a) 0
(b) 1
(c) 2
(d) 3

Answer : B

Question. Which property is reflected in the following: 7 x 5 = 5 x 7
(a) Closure
(b) Commutative
(c) Associative
(d) Distributive

Answer : B

Question. If A and B represent two integers other than zero, then |A| + |B| – |B| – |A|
(A) may be negative
(B) may be positive
(C) may be 0
(D) must be 0

Answer : D

Question. If the sum of five consecutive positive integers is A , then the sum of the next five consecutive integers in terms of A is :
(A) A +1
(B) A+ 5
(C) A + 25
(D) 2A

Answer : C

Question. If x is an even positive integer and y is an odd positive integer, then which of the following statements is true ?
(A) (x – 1) y is even
(B) x (y – 1) is odd
(C) (x – 1) (y – 1) is odd
(D) x(y – 1) is even

Answer : D

Question. Which of the following statement is true
(a) 7 ÷ 0 = 7
(b) 7 ÷ 0 = 0
(c) 7 ÷ 0 = 0 ÷ 7
(d) 0 ÷ 7 = 0

Answer : D

Question. Which of the following is not true
(a) 0 ÷ 2 = 0
(b) – 25 ÷ 5 = – 5
(c) 12 ÷ 0 = 12
(d) 4 ÷ 1 = 4

Answer : C

Question. Which of the following does not represent pair of integer (a, b) such that a ÷ b = 2
(a) ( – 6 , – 3 )
(b) ( – 2 , 1)
(c) ( – 10 , – 5 )
(d) (8 , 4 )

Answer : B

Question. Which of the following are the symbols of operation on integers that satisfy commutative
property?
(A) – , ÷
(B) – , ×
(C) + , –
(D) + ,×

Answer : D

Question. Study the below statements carefully and answer the question given below.
(i) The successor of 0 × (–52) is 1 × (–52).
(ii) Integers are closed under division.
(iii) (–20) × (5 – 3) = (–20) × (–2)
(iv) (–2) + (–9) is less than (–9) – (–2).
Which of the following statements is/are correct?
(A) Only (i)
(B) Both (i) and (iv)
(C) Only (iv)
(D) Both (i) and (iii)

Answer : C

Question. Temperature of a place at 12:00 noon was 5ºC. Temperature increased by 3°C in first hour and decreased by 1°C in the second hour. What was the temperature at 2:00 pm?
(A) 5°C
(B) 7°C
(C) 8°C
(D) 6°C

Answer : B

Question. – 6÷(-3 ) gives
(a) ̶ 9
(b) 2
(c) ̶ 2
(d) 3

Answer : B

Question. Product of two negative integers is always
(a) Always negative
(b) Always positive
(c) Either positive or negative
(d) 0

Answer : B

Question. Which of the following is true
(a) 5 ÷ 7 = 7 ÷ 5
(b) 0 ÷ 3 = 0 ÷ 5
(c) 2 ÷ ( 3 – 1) = 2 ÷ 3 – 2 ÷ 1
(d) 4 ÷ 1 = 1 ÷ 4

Answer : B

Question. Kanhaiya multiplied two numbers and got – 4 as the product. He then subtracted the second number from the first and got the answer as 5 . The two numbers are
(A) 2 , – 3
(B)1 , – 4
(C) – 21 , 4
(D) 5 , –1

Answer : B

Question. If p : when a positive integer and a negative integer are added we always get a negative integer and q : when two negative integers are added , we get a positive integer , then
(A) Both p and q are true
(B) p is true and q is false
(C) p is false and q is true
(D) both p and q are false

Answer : D

Question. Ashish had Rs 20 with him. He spent Rs 8 on Monday , got Rs 5 as pocket money on Tuesday, gave Rs. 7 loan to a friend on Wednesday , ate an ice cream worth Rs 10 on Thursday, received a reward of Rs 5 from his grandfather on Friday. How ,much does he have on Sunday, if his friend repays the loan on Saturday?
(A) Rs 12
(B) Rs 13
(C) Rs 14
(D) Rs 9

Answer : A

Question. The product of 3 integers is odd. What can their sum be?
(A) odd
(B) even
(C) positive
(D) negative

Answer : A

Question. 1 – 2 + 3 – 4 + 5 – 6 +……………….. + 2009 – 2010 + 2011 – 2012.
(A) – 2000
(B) – 1
(C) 1000
(D) – 1006

Answer : D

Question. Which of the following statements is INCORRECT with respect to integers?
(A) Integers are closed under both addition and subtraction.
(B) Commutative property holds in addition but not in subtraction.
(C) Associative property holds both in addition and subtraction.
(D) 0 is the additive identity of integers.

Answer : C

Question. Re-arrange the digits of 1,02,35,007 to get the largest and the smallest number. The difference between the place values of 2 in these two numbers is
(A) 0
(B) 8,000
(C) 20,000
(D) 18,000

Answer : D

Question. Suppose n is an integer such that the sum of the digits of n is 2 and its range is 104 < n < 105. The number of different values for n is
(A) 5
(B) 4
(C) 3
(D) 2

Answer : B

Question. If a and b are integers , then a ÷ b
(A) may or may not be integer
(B) always an integer
(C) never be an integer
(D) none of these

Answer : A

Question. If 23 integers are multiplied and the product is negative then which of the following statements can be true about them :
(A) 10 are negative, 13 are positive
(B) 14 are negative, 9 are positive
(C) 12 are negative, 21 are positive
(D) 17 are negative, 6 are positive

Answer : D

Question. Find the value of the given expression (–35) – (–15) + 8 – 9 – (–152) – 25 + (–8)
(A) -78
(B) 32
(C) -55
(D) 98

Answer : D

Question. The temperature of a city at 1 p.m. was 15°C. Every hour it decreases by 3°C. The temperature at 6 p.m. was
(A) 3°C
(B) 0°C
(C) -3°C
(D) -6°C

Answer : B

Question. Solve for x: 2x-5 = 1
(A) 3
(B) 2
(C) 4
(D) both option (A) and (B)

Answer : D