CBSE Class 7 Maths – MCQ and Online Tests – Unit 1 – Integers
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CBSE Class 7 Maths – MCQ and Online Tests – Unit 1 – Integers
Question 1.
(-30) × 20 is equal to
(a) 600
(b) -600
(c) 50
(d) 10.
Answer
Answer: (b) – 600
Question 2.
10 × (-20) is equal to
(a) 200
(b) -200
(c) 30
(s) 20
Answer
Answer: (b) -200
Question 3.
Which of the following statements is wrong?
(?) When a positive integer and a negative integer are added, we always get a negative integer
(b) Additive inverse of 8 is (-8)
(c) Additive inverse of (-8) is 8
(d) For subtraction, we add the additive inverse of the integer that is being subtracted, to the other integer.
Answer
Answer: (?) When a positive integer and a negative integer are added, we always get a negative integer
Question 4.
Which of the following is true?
(?) (- 8) + (- 4) > (- 8) – (- 4)
(b) (- 8) + (- 4) < (- 8) – (- 4)
(c) (-8) + (- 4) = (- 8) – (- 4)
(d) none of these.
Answer
Answer: (b) (- 8) + (- 4) < (- 8) – (- 4)
Hint:
(-8) + (-4) = -12
(-8) – (-4) = -4
Question 5.
On a number line, when we subtract a positive integer, we
(a) move to the right
(b) move to the left
(c) do not move at all
(d) none of these.
Answer
Answer: (b) move to the left
Question 6.
On a number line, when we subtract a negative integer, we
(a) move to the right
(b) move to the left
(c) do not move at all
(d) none of these.
Answer
Answer: (a) move to the right
Question 7.
When two positive integers are added, we get
(a) a positive integer
(b) a negative integer
(c) sometimes a positive integer, sometimes a negative integer
(d) none of these.
Answer
Answer: (a) a positive integer
Question 8.
When two negative integers are added, we get
(a) a positive integer
(b) a negative integer
(c) sometimes a positive integer, sometimes a negative integer
(d) none of these.
Answer
Answer: (b) a negative integer
Question 9.
On a number line, when we add a positive integer, we
(a) move to the right
(b) move to the left
(c) do not move at all
(d) none of these.
Answer
Answer: (a) move to the right
Question 10.
On a number line, when we add a negative integer, we
(a) move to the right
(b) move to the left
(c) do not move at all
(d) none of these.
Answer
Answer: (b) move to the left
Question 11.
(-1) × (-1) × (-1) × …….. 5 times is equal to
(a) 1
(b) -1
(c) 1 or -1
(d) none of these.
Answer
Answer: (b) -1
Question 12.
(-1) × (-1) × (-1) × …… 2 m times, where m is a natural number, is equal to
(a) 1
(b) -1
(c) 1 or -1
(d) none of these.
Answer
Answer: (a) 1
Question 13.
(-1) × (-1) × (-1) × (2m + 1) times,
where m is a natural number, is equal to
(a) 1
(b) -1
(c) 1 or -1
(d) none of these.
Answer
Answer: (b) -1
Question 14.
(-20) × (-5) is equal to
(a) 100
(b) – 100
(c) 20
(d) 5.
Answer
Answer: (a) 100
Question 15.
3 × 0 is equal to
(a) 0
(b) 3
(c) 1
(d) -3
Answer
Answer: (a) 0
Question 16.
0 × (-5) is equal to
(a) 0
(b) 5
(c) -5
(d) 1.
Answer
Answer: (a) 0
Question 17.
10 ÷ (-5) is equal to
(a) 1
(b) 2
(c) -2
(d) 5.
Answer
Answer: (c) -2
Question 18.
(-6) ÷ (-3) is equal to
(a) 1
(b) 2
(c) 3
(d) 6.
Answer
Answer: (b) 2
Question 19.
(-2) × 1 is equal to
(a) 2
(b) -2
(c) 1
(d) – 1.
Answer
Answer: (b) -2
Question 20.
1 × 6 is equal to
(a) 6
(b) -6
(c) 1
(d) -1.
Answer
Answer: (a) 6
Question 21.
4 × (-1) is equal to
(a) 4
(b) -4
(c) 1
(d) – 1.
Answer
Answer: (b) -4
Question 22.
(-10) × 0 × (-15) is equal to
(a) 0
(b) 10
(c) 15
(d) 150.
Answer
Answer: (a) 0
Question 23.
The integer whose product with (-1) is 0, is
(a) 1
(b) -1
(c) 0
(d) none of these
Answer
Answer: (c) 0
Question 24.
The integer whose product with (-1) is 1, is
(a) -1
(b) 1
(c) 0
(d) none of these.
Answer
Answer: (a) -1
Question 25.
The multiplicative identity for integers is
(a) 1
(b) -1
(c) 0
(d) none of these.
Answer
Answer: (a) 1
Question 26.
a × (b + c) = a × b + a × c is called
(a) commutative property
(b) associative property
(c) distributive property
(d) closure property.
Answer
Answer: (c) distributive property
Question 27.
(-5) ÷ 1 is equal to
(a) 5
(b) -5
(c) 1
(d) -1.
Answer
Answer: (b) -5
Question 28.
(-9) ÷ (-1) is equal to
(a) 1
(b) 9
(c) -1
(d) -9.
Answer
Answer: (b) 9
Question 29.
If 16 ÷ x = 16, then x is equal to
(a) 1
(b) 2
(c) 4
(d) 16.
Answer
Answer: (a) 1
Question 30.
If (-50) ÷ x = 1, then x is equal to
(a) 1
(b) 50
(c) -50
(d) 10.
Answer
Answer: (c) -50
Question 31.
If x ÷ 1 = 8, then x is equal to
(a) 8
(b) 1
(c) -8
(d) -1.
Answer
Answer: (a) 8
Question 32.
The additive identity for integers is
(a) 1
(b) -1
(c) 0
(d) none of these.
Answer
Answer: (c) 0
Question 33.
The product of two negative integers is
(a) a positive integer
(b) a negative integer
(c) either a positive integer or a negative integer
(d) none of these.
Answer
Answer: (a) a positive integer
Question 34.
The product of three negative integers is
(a) a positive integer
(b) a negative integer
(c) either a positive integer or a negative integer
(d) none of these.
Answer
Answer: (b) a negative integer
Question 35.
(-1) × (-1) × (-1) × ……… 10 times is equal to
(a) 1
(b) -1
(c) 1 or -1
(d) none of these.
Answer
Answer: (a) 1
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