Questions · Page 1 of 2

M.C.Q. [1 Marks Each]

🎯

Test yourself on this topic

50 questions · timed · auto-graded

MCQ 11 Mark
Mark against the correct answer in the following: The sum of two integers is $-25$. If one of them is $30$ then the other is
  • A
    $55$
  • B
    $5$
  • $-55$
  • D
    None of these.
Answer
Correct option: C.
$-55$
Let $x$ be the other integer
$x + 30 = -25$
$x = -25 - 30$
$x = -55$
View full question & answer
MCQ 21 Mark
Mark against the correct answer in the following:
The successor of $-18$ is:
  • A
    $-19$
  • B
    $17$
  • $-17$
  • D
    $19$
Answer
Correct option: C.
$-17$
In succession, we move from the left to right of the number line.
View full question & answer
MCQ 31 Mark
Mark $(\checkmark)$ against the correct answer in the following: The predecessor of $-99$ is:
  • A
    $-98$
  • $-100$
  • C
    $98$
  • D
    $100$
Answer
Correct option: B.
$-100$
The predecessor of a number lies to the left of the number.
$​​-100$ lies to the left of $-​99.$
Hence, $​​-100$ is a predecessor of $-​99.$
View full question & answer
MCQ 41 Mark
Mark $(\checkmark)$ against the correct answer in the following:
Additive inverse of $-23$ is:
  • A
    $\frac{-1}{23}$
  • B
    $\frac{1}{23}$
  • $23$
  • D
    $-23$
Answer
Correct option: C.
$23$
Additive inverse of a number added to the number gives $0.-23 + 23 = 0$
Hence, $23$ is the additive inverse of $-23.$
View full question & answer
MCQ 51 Mark
Mark $(\checkmark)$ against the correct answer in the following:When $34$ is subtracted from $-36$, we get:
  • A
    $2$
  • B
    $-2$
  • C
    $70$
  • $-70$
Answer
Correct option: D.
$-70$
$-36 - 34$
$= -70$
View full question & answer
MCQ 61 Mark
Mark against the correct answer in the following: On subtracting $-9$ from $-6$, we get:
  • A
    $-15$
  • B
    $-3$
  • $3$
  • D
    None of these.
Answer
Correct option: C.
$3$
We have:
$-6 - (-9)$
$= -6 + 9$
$= 3$
View full question & answer
MCQ 71 Mark
Mark $(\checkmark)$ against the correct answer in the following: If $(−13 + 6)\ \Box−25−(−9)$, then the correct symbol in the place holder is:
  • A
    $<$
  • $>$
  • C
    $=$
  • D
    None of these.
Answer
Correct option: B.
$>$
Here,
$L.H.S. = (-13 + 6)$
$= -7$
$R.H.S. = -25 - (-9)$
$= -25 + 9$
$= -16$
$-7 > -16$
$L.H.S. > R.H.S.$
View full question & answer
MCQ 81 Mark
Mark against the correct answer in the following: $(-9) \times 6 + (-9) \times 4 = ?$
  • $-90$
  • B
    $90$
  • C
    $-18$
  • D
    $18$
Answer
Correct option: A.
$-90$
$(-9) \times 6 + (-9) \times 4$
Using distributive law:
$(-9) \times (6 + 4)$
$= (-9) \times (10)$
$= -90$
View full question & answer
MCQ 91 Mark
Mark $(\checkmark)$ against the correct answer in the following:
The successor of $-89$ is:
  • A
    $-90$
  • $-88$
  • C
    $90$
  • D
    $88$
Answer
Correct option: B.
$-88$
The successor of $-89$ is ​$-88$. The successor of a number lies towards its right on a number line.
$88$ lies to the right of $-89.$
View full question & answer
MCQ 101 Mark
Mark $(\checkmark)$ against the correct answer in the following: $? + (−8) = 12$
  • A
    $-4$
  • B
    $(-20)$
  • $20$
  • D
    $4$
Answer
Correct option: C.
$20$
$x + (-8) = 12$
$\Rightarrow x - 8 = 12$
$\Rightarrow x = 12 + 8$
$\Rightarrow x = 20$
View full question & answer
MCQ 111 Mark
Mark against the correct answer in the following: The sum of two integers is $-13$. If one of them is 8 then the other is:
  • A
    $-5$
  • $-21$
  • C
    $21$
  • D
    None of these.
Answer
Correct option: B.
$-21$
Let $x$ be the other integer
$x + 8 = -13$
$x = -13 - 8$
$x = -21$
View full question & answer
MCQ 121 Mark
Mark against the correct answer in the following: $(-7) + (-9) + 12 + (-16) = ?$
  • $-20$
  • B
    $20$
  • C
    $-12$
  • D
    None of these.
Answer
Correct option: A.
$-20$
$(-7) + (-9) + 12 + (-16)$
$= -7 - 9 + 12 - 16$
$= -20$
View full question & answer
MCQ 131 Mark
Mark against the correct answer in the following: $2$ less than $-7$ is:
  • $-9$
  • B
    $-5$
  • C
    $5$
  • D
    None of these.
Answer
Correct option: A.
$-9$
$2$ less than $-7$ means the following:
$= -7 - 2$
$= -9$
View full question & answer
MCQ 141 Mark
Mark $(\checkmark)$ against the correct answer in the following:
The integer which is $5$ more that $(-7)$ is:
  • A
    $-12$
  • B
    $12$
  • $-2$
  • D
    $2$
Answer
Correct option: C.
$-2$
$5$ more than $(-7)$ means $5$ added to $(-7)$
$5 + (-7)$
$= 5 - 7$
$= -2$
View full question & answer
MCQ 151 Mark
Mark against the correct answer in the following: The predecessor of $-16$ is:
  • A
    $-15$
  • $-17$
  • C
    $15$
  • D
    $17$
Answer
Correct option: B.
$-17$
To find the predecessor of a number, we move from the right to the left of a number line.
View full question & answer
MCQ 161 Mark
Mark $(\checkmark)$ against the correct answer in the following: What should be added to $16$ to get $(-31)?$
  • A
    $15$
  • B
    $-15$
  • C
    $47$
  • $-47$
Answer
Correct option: D.
$-47$
Let the number to be added to $16$ be $x$
$x + 16 = (-31)$
$\Rightarrow x = (-31) - 16$
$\Rightarrow x = -47$
View full question & answer
MCQ 171 Mark
Mark against the correct answer in the following:$ 6 - (-4) = ?$
  • A
    $2$
  • B
    $-10$
  • $10$
  • D
    None of these.
Answer
Correct option: C.
$10$
$6 - (-4)$
$= 6 + 4$
$= 10$
View full question & answer
MCQ 181 Mark
Mark against the correct answer in the following: The sum of two integers is $20$. If one of them is $-5$ then the other is:
  • $25$
  • B
    $-25$
  • C
    $15$
  • D
    None of these.
Answer
Correct option: A.
$25$
Let $x$ be the other integer
$x + (-5) = 20$
$x - 5 = 20$
$x = 25$
View full question & answer
MCQ 191 Mark
Mark against the correct answer in the following:
$-12 - (-5) = ?$
  • A
    $-17$
  • $-7$
  • C
    $7$
  • D
    None of these.
Answer
Correct option: B.
$-7$
$-12 - (-5)$
$= -12 + 5$
$= -7$
View full question & answer
MCQ 201 Mark
Mark against the correct answer in the following: $8 + (-8) = ?$
  • A
    $16$
  • B
    $-16$
  • $0$
  • D
    None of these.
Answer
Correct option: C.
$0$
$8 + (-8)$
$= 8 - 8$
$= 0$
View full question & answer
MCQ 211 Mark
Mark against the correct answer in the following: $49 + (-27) = ?$
  • A
    $-73$
  • B
    $73$
  • $22$
  • D
    None of these.
Answer
Correct option: C.
$22$
$49 + (-27)$
$= 49 - 27$
$= 22$
View full question & answer
MCQ 221 Mark
Mark against the correct answer in the following: $(-42) + (-35) = ?$
  • A
    $-7$
  • B
    $7$
  • $-77$
  • D
    None of these.
Answer
Correct option: C.
$-77$
$(-42) + (-35)$
$= -42 - 35$
$= -77$
View full question & answer
MCQ 231 Mark
Mark against the correct answer in the following: $4$ more than $-5$ is:
  • A
    $9$
  • B
    $-9$
  • $-1$
  • D
    $1$
Answer
Correct option: C.
$-1$
$4$ more than $-5$ means the following:
$= -5 + 4$
$= -1$
View full question & answer
MCQ 241 Mark
Mark against the correct answer in the following: $(-37) + 6 = ?$
  • A
    $-43$
  • $-31$
  • C
    $31$
  • D
    None of these.
Answer
Correct option: B.
$-31$
$(-37) + 6$
$= -37 + 6$
$= -31$
View full question & answer
MCQ 251 Mark
Mark against the correct answer in the following: $5 - (-8) = ?$
  • A
    $3$
  • $13$
  • C
    $-3$
  • D
    None of these.
Answer
Correct option: B.
$13$
$5 - (-8)$
$= 5 + 8$
$= 13$
View full question & answer
MCQ 261 Mark
Mark against the correct answer in the following:
$(-6) + 4 - (-3) = ?$
  • A
    $-5$
  • B
    $-1$
  • $1$
  • D
    None of these.
Answer
Correct option: C.
$1$
$(-6) + 4 - (-3)$
$= -6 + 4 + 3$
$= -6 + 7$
$= 1$
View full question & answer
MCQ 271 Mark
Mark against the correct answer in the following: $7 + |-3| = ?$
  • A
    $4$
  • $10$
  • C
    $-10$
  • D
    None of these.
Answer
Correct option: B.
$10$
$7 + |-3|$
$= 7 + (+3)$ (The absolute value of $-3$ is $3.)$
$= 7 + 3$
$= 10$
View full question & answer
MCQ 281 Mark
Mark against the correct answer in the following: $2$ less than $-3$ is:
  • A
    $-1$
  • B
    $1$
  • $-5$
  • D
    $5$
Answer
Correct option: C.
$-5$
$2$ less than $-3$ means the following:
$= -3 - 2$
$= -5$
View full question & answer
MCQ 291 Mark
Mark against the correct answer in the following: On subtracting $8$ from $-4$, we get:
  • A
    $4$
  • B
    $12$
  • $-12$
  • D
    None of these.
Answer
Correct option: C.
$-12$
$= -4 - 8$
$= -12$
View full question & answer
MCQ 301 Mark
Mark against the correct answer in the following: On subtracting $-5$ from $10$, we get:
  • A
    $5$
  • B
    $-15$
  • $15$
  • D
    None of these.
Answer
Correct option: C.
$15$
We have:
$10 - (-5)$
$= 10 + 5$
$= 15$
View full question & answer
MCQ 311 Mark
Mark against the correct answer in the following: The additive inverse of $-5$ is:
  • $5$
  • B
    $0$
  • C
    $-4$
  • D
    $-6$
Answer
Correct option: A.
$5$
If we add the additive inverse of a number to the number, we get $0.$
$-5 + 5 = 0$
View full question & answer
MCQ 331 Mark
The sum of two integers is -13 . If one of them is 8 then the other one is
  • A
    21
  • -21
  • C
    -5
  • D
    5
Answer
Correct option: B.
-21
B
View full question & answer
MCQ 421 Mark
The sum of two integers is 20 . If one of them is -8 then the other is
  • A
    -28
  • 28
  • C
    -12
  • D
    12
Answer
Correct option: B.
28
B
View full question & answer
MCQ 431 Mark
The sum of two integers is -25 . If one of them is 6 , the other one is
  • A
    -19
  • B
    19
  • -31
  • D
    31
Answer
Correct option: C.
-31
C
View full question & answer