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1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. Which of the following statements is wrong?
A. 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.
8. Which of the following is true?
A. (- 8) + (- 4) > (- 8) – (- 4)
B. (- 8) + (- 4) < (- 8) – (- 4)
C. (-8) + (- 4) = (- 8) – (- 4)
D. none of these.
9. (-1) × (-1) × (-1) × ……… 10 times is equal to
A. 1
B. -1
C. 1 or -1
D. none of these
10. (-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
11. (-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
12. (-30) × 20 is equal to
A. 600
B. -600
C. 50
D. 10
13. (-10) × 0 × (-15) is equal to
A. 0
B. 10
C. 15
D. 150
14. The integer whose product with (-1) is 0, is
A. 1
B. -1
C. 0
D. none of these
15. (-6) ÷ (-3) is equal to
A. 1
B. 2
C. 3
D. 6
16. If 16 ÷ x = 16, then x is equal to
A. 1
B. 2
C. 4
D. 16
17. The multiplicative identity for integers is
A. 1
B. -1
C. 0
D. none of these.
18. a × (b + c) = a × b + a × c is called
A. commutative property
B. associative property
C. distributive property
D. closure property.
19. Manish deposits Rs 2000 in his bank account and withdraws Rs 1000 from it, the next day. Find the balance in Manish’s account after the withdrawal.
A. Rs 2000
B. Rs 2000
C. Rs 1000
D. none of these.
20. The integer whose product with (-1) is 1, is
A. -1
B. 1
C. 0
D. none of these.
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