All questions of Negative Numbers and Integers for CTET & State TET Exam

Which of the following number is greater than – 1?
  • a)
    -12
  • b)
    -3
  • c)
    2
  • d)
    -2
Correct answer is option 'C'. Can you explain this answer?

  1. -12: This is a negative number and is smaller than −1. On a number line, −12 is to the left of −1, so it's less than −1.
  2. -3: This is also a negative number and is smaller than −1. On a number line, −3 is to the left of −1, so it's less than −1.
  3. 2: This is a positive number. Positive numbers are always greater than negative numbers, so 2 is greater than −1. On a number line, 2 is to the right of −1, which means it is greater.
  4. -2: This is a negative number and is smaller than −1. On a number line, −2 is to the left of −1, so it's less than −1.
Conclusion: The only number in the list that is greater than −1 is 2. Positive numbers like 2 are always greater than negative numbers like −1. Therefore, 2 is the correct answer.
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Which of these is the smallest positive integer?
  • a)
    0
  • b)
    100
  • c)
    1
  • d)
    9
Correct answer is option 'C'. Can you explain this answer?

Gayatri Chavan answered
 1, because (1,2,- - - - ) are the positive integers and 0 is neither positive nor negative number , (-1,-2,- - - -) are negative integers . Hence among positive integers 1 is the least integer.

Which of the following statement is false:
  • a)
    -7 +(-6) = -13
  • b)
    -5 + 1 = 4
  • c)
    2 + (-1) = 1
  • d)
    8 + (-9) = -1
Correct answer is option 'B'. Can you explain this answer?

Let's examine each statement to verify its correctness:
  1. Statement: −7+(−6)=−13
    • Solution: Adding two negative numbers, −7+(−6)=−13-7 + (-6) = -13−7+(−6)=−13.
    • Result: This statement is true.
  2. Statement: −5+1=4
    • Solution: Adding −5 and 1 gives −4, not 4.
    • Result: This statement is false.
  3. Statement: 2+(−1)=1
    • Solution: Adding 2 and −1 gives 1.
    • Result: This statement is true.
  4. Statement: 8+(−9)=−1
    • Solution: Adding 888 and −9 gives −1.
    • Result: This statement is true.
Therefore, the false statement is:
2: −5+1=4. The correct result should be −5+1=−4.

Can you explain the answer of this question below:

Farther a number from zero on the right, _________ is its value.

  • A:

    equal

  • B:

    larger

  • C:

    smaller

  • D:

    None of these

The answer is b.

On the right side of zero lies the positive numbers. 
Therefore, farther a number from zero on the right, larger is its value.

– 26 is _________ than – 25.
  • a)
    1
  • b)
    smaller
  • c)
    larger
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Amit Sharma answered
As we know, in negative numbers, the number with larger absolute value is smaller. 
Therfore, - 26 is smaller than - 25.

The opposite of -7 is
  • a)
    -6
  • b)
    6
  • c)
    7
  • d)
    -5
  • e)
     
Correct answer is option 'C'. Can you explain this answer?

Lavanya Menon answered
The opposite of any negative number is it's positive counterpart. Therefore, opposite of -7 would be 7.

Which number is neither positive nor negative?
  • a)
    1
  • b)
    5
  • c)
    0
  • d)
    10
Correct answer is option 'C'. Can you explain this answer?

Partho Nair answered
Solution:
The number which is neither positive nor negative is zero (0).

Explanation:
• Positive numbers are greater than zero. Example: 1, 2, 3, 4, 5, ...
• Negative numbers are less than zero. Example: -1, -2, -3, -4, -5, ...
• Zero is neither positive nor negative. It is a neutral number.

Therefore, the correct option is (c) 0.

Write the number with appropriate signs: 150 m below sea level.
  • a)
    -150
  • b)
    150
  • c)
    200
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?

Sea level is considered as 0, thus any number below 0 will be a negative number. 
Therfore the appropriate sign for 150 m below the sea level is -150.

In addition and subtraction of the integers the sign of answer depends upon
  • a)
    their sum
  • b)
    their difference
  • c)
    smaller number
  • d)
    greater numerical value
Correct answer is option 'D'. Can you explain this answer?

Athira Basak answered
Ans.

It depends on the larger no . if negative no .is greater than sign will be a minus . if positive number is greater than sign will be a plus.
Example : 20-30= -10

On a vertical number line, where are the positive numbers placed?
  • a)
    To the right of 0.
  • b)
    To the left of 0.
  • c)
    Above 0.
  • d)
    Below zero.
Correct answer is option 'C'. Can you explain this answer?

Kunal Mehta answered
On a vertical number line, positive numbers are located above zero. As we look upward on a vertical number line, the values of the numbers increase. On a vertical number line, negative numbers are located above zero.

What is the integer representation of walking 3km south?
  • a)
    Walking 3 km towards the north
  • b)
    -3 km
  • c)
    +3 km
  • d)
    +3
Correct answer is option 'B'. Can you explain this answer?

Varun Kapoor answered
The correct option is Option B.
North is (Positive) & South is (Negative)
Hence Option B is the Correct answer i.e -3 km

Sum of two negative numbers is always ____ 
  • a)
    0
  • b)
    1
  • c)
    positive sum
  • d)
    negative sum
Correct answer is option 'D'. Can you explain this answer?

Because we can write it as -2+-1 so if you can see the  sign before the numbers is a negative sign and the bigger number is 2 so the sign of the bigger number is always taken

What is the set of negative numbers and whole numbers called?
  • a)
    The set of natural numbers
  • b)
    The set of integers
  • c)
    The set of positive numbers
  • d)
    The set of negative numbers
Correct answer is option 'B'. Can you explain this answer?

Integers

Integers are the set of whole numbers and their opposites, including zero. This means that integers are composed of the set of positive whole numbers (1, 2, 3, ...), the set of negative whole numbers (-1, -2, -3, ...), and zero (0).

Therefore, option B is the correct answer as it specifically refers to the set of integers. Option A (the set of natural numbers) only includes positive whole numbers, and option C (the set of positive numbers) only includes positive numbers without zero or negative numbers. Option D (the set of negative numbers) only includes the set of negative whole numbers without zero or positive numbers.

In summary, integers are a broader set that includes both negative and positive whole numbers and zero.

The value of 5 ÷ (−1) does not lie between
  • a)
    0 and −10
  • b)
    0 and 10
  • c)
    −4 and −15
  • d)
    −6 and 6
Correct answer is option 'B'. Can you explain this answer?

Kiran Reddy answered
Given:
Expression: 5 ÷ (-1)
Concept used:
Division of a positive number by a negative number results in a negative quotient.
Calculation:
5 ÷ (-1) = -5
Now let's check which range the value -5 lies in:
-10 < -5 < 0
∴ The value of 5 ÷ (-1) does not lie between 0 and 10.

Every positive integer is larger than every ________ integer.
  • a)
    positive
  • b)
    negative
  • c)
    1
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Harshad Goyal answered
Understanding Positive and Negative Integers
Every positive integer is defined as a number greater than zero, such as 1, 2, 3, and so on. These integers are always larger than zero.

Negative Integers Explained
- Negative integers are numbers less than zero, such as -1, -2, -3, etc.
- They represent values that are below the baseline of zero and are always less than positive integers.

Comparison of Positive and Negative Integers
When comparing positive and negative integers:
- **Positive integers (e.g., 1, 2, 3)**: These numbers are greater than zero.
- **Negative integers (e.g., -1, -2, -3)**: These numbers are less than zero.
This leads us to the key point:
- **Every positive integer is larger than every negative integer**.
For example:
- The positive integer 1 is larger than -1.
- The positive integer 2 is larger than -3.

Why Other Options Are Incorrect
- **Option A: Positive**: This is incorrect because a positive integer is not larger than itself.
- **Option C: 1**: This is also incorrect because it only refers to one specific positive integer, not all positive integers.
- **Option D: None of these**: This does not apply since option B is indeed correct.

Conclusion
In conclusion, the correct answer to the statement "Every positive integer is larger than every ________ integer" is option **B: negative**. This highlights the fundamental nature of integers and their relationships on the number line.

Sum of - 10 , - 5 and 12 is
  • a)
    27
  • b)
     3
  • c)
    -27
  • d)
    - 3
Correct answer is option 'D'. Can you explain this answer?

Palak Nambiar answered
Calculation of the sum of -10, -5, and 12

Steps to find the sum:
- Add the numbers together: -10 + (-5) + 12
- -10 + (-5) = -15
- -15 + 12 = -3

Explanation:
When adding negative numbers, the rule is to add the numbers together and keep the sign of the larger number. In this case, -10 and -5 are added to get -15. Then, -15 is added to 12 to get the final result of -3.
Therefore, the sum of -10, -5, and 12 is -3.

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