Test: Integers - Class 5 MCQ

• Descent of 16 m: This means that the object is moving downwards by 16 meters.


• Direction of descent: Since the object is descending, the direction is negative.


• Sign convention: In physics, downward direction is usually taken as negative.


• Representation: Therefore, the descent of 16 m can be represented as -16 m.


• Answer: Hence, the correct answer is option A: - 16.

• When subtracting a negative number, it is equivalent to adding the positive number. Therefore, 4 – (-17) is the same as 4 + 17.


• 4 + 17 is equal to 21.

• Therefore, the value of the expression 4 – (-17) is +21.

remember the more smaller the negative number is greater it is

• Given: -125


• Opposite: To find the opposite of a number, we simply change the sign of the number.


• When we change the sign of -125, we get +125.


• Answer: Therefore, the opposite of -125 is 125 (option A).

• Step 1: Start by subtracting the numbers: -6 - 10 = -16


• Step 2: The result of the subtraction is -16, which is the answer

• Step 1: Add the two negative numbers together: (-4) + (-5) = -9


• Step 2: The sum of -4 and -5 is -9, so the correct answer is C: -9

• Given Equation: - 4 – (- 4)


• To solve this, we need to simplify the given equation step by step.


• Step 1: Simplify the subtraction of negative numbers: - 4 – (- 4) = - 4 + 4


• Step 2: Add the numbers: - 4 + 4 = 0


• Final Answer: The result of the equation - 4 – (- 4) is 0.

• Step 1: Start with the given equation: -12 + 15


• Step 2: Subtract 12 from 15: 15 - 12 = 3


• Step 3: Therefore, the answer is +3

• Subtraction: To find the result of -12 + 15, you need to subtract 12 from 15.


• Calculation: 15 - 12 = 3


• Final Answer: The answer to -12 + 15 is +3

• Correct Answer: The correct answer is A: +3


• Explanation: By subtracting 12 from 15, we get the result of +3.

• When you add a positive number to a negative number, you subtract the absolute value of the smaller number from the absolute value of the larger number and give the result the sign of the larger number.


• In this case, you have 15 + (-21).


• So, you subtract 21 from 15 (21 - 15 = 6) and give the result the sign of the larger number, which is negative.

• 15 + (-21) = -6


• Therefore, the correct answer is -6 (option C).

• A: +20 seconds before take off


• B: -16 seconds before take off


• C: -4 seconds before take off


• D: +40 seconds before take off

• 40 seconds before take off, we need to determine the time for each point mentioned in the question.


• A: +20 seconds indicates that point A is 20 seconds after the 40-second mark before take off.


• B: -16 seconds indicates that point B is 16 seconds before the 40-second mark before take off.


• C: -4 seconds indicates that point C is 4 seconds before the 40-second mark before take off.


• D: +40 seconds indicates that point D is 40 seconds after the 40-second mark before take off, which means it is actually 40 seconds before take off.


• Therefore, the correct answer is D, +40 seconds before take off.