Olympiad Test: Subtraction - 1 - Class 4 MCQ

Subtraction
- Subtraction is the mathematical operation of taking away one number from another.
- It is the opposite of addition and is denoted by the "-" symbol.
- Subtraction is used to find the difference between two numbers or to remove objects or quantities from a given collection.
- In subtraction, the number being subtracted is called the subtrahend, and the number it is being subtracted from is called the minuend.
- The result of a subtraction operation is called the difference.
- Subtraction can be performed using various methods such as column subtraction, mental subtraction, or using a calculator.
- Subtraction is an essential arithmetic operation used in various real-life situations such as counting, measuring, and solving mathematical problems.
- It is also used in more advanced mathematical concepts like algebra, calculus, and statistics.
- Subtraction is taught to students at an early stage of their mathematical education, usually in elementary school.
In conclusion, subtraction is the mathematical operation of taking away one number from another or removing objects from a given collection. It is denoted by the "-" symbol and is an essential arithmetic operation used in various real-life situations and advanced mathematical concepts.

The result after subtraction is called difference.

The correct answer is A: Minuend.
Explanation:
- The minuend is the number from which another number is subtracted.
- In a subtraction operation, the minuend is the larger number.
- It represents the quantity or value that is being diminished or reduced.
- The minuend is the starting point of the subtraction process.
- When subtracting, the minuend is the number that you want to subtract from.
- The difference is the result of subtracting the subtrahend from the minuend.
To summarize:
- Minuend: The number from which another number is subtracted.
- Subtrahend: The number that is being subtracted.
- Difference: The result of subtracting the subtrahend from the minuend.

Clearly sum is different. Rest all decrease the value of a quantity while sum increases the quantity.

Minuend Calculation:
To find the minuend in the given equation ? - 5 = 45, we need to determine the value that, when subtracted by 5, equals 45.
1. Let's assume the minuend as x. So the equation becomes x - 5 = 45.
2. To isolate x, we need to get rid of the -5 on the left side of the equation.
3. We can do this by adding 5 to both sides of the equation.
- (x - 5) + 5 = 45 + 5
- x = 50
4. Therefore, the minuend is 50.
Answer:
The minuend in the given equation is 50 (Option A).

When we subtract a number from itself, the answer is always zero.

To find the missing number that when subtracted from 115 gives a result of 0, we can use the subtraction property of equality.
Step 1: Write the equation: 115 - ? = 0
Step 2: Simplify the equation:
115 - ? = 0
? = 115
Step 3: Answer: The missing number is 115.
Explanation:
When we subtract any number from itself, the result is always 0. In this case, if we subtract 115 from 115, we get 0. Therefore, the missing number that when subtracted from 115 gives a result of 0 is 115 itself.

To find the number that, when subtracted from itself, results in the original number, we need to determine the value that satisfies this condition. Let's analyze each answer choice:
A: Zero
- When we subtract zero from any number, the answer is the number itself. This statement matches the given condition.
B: One
- When we subtract one from any number, the result is not the same as the original number. Therefore, this choice does not satisfy the condition.
C: Two
- When we subtract two from any number, the result is not the same as the original number. Hence, this option does not fulfill the given condition.
D: Itself
- The option itself does not provide any specific value. However, if we interpret "itself" as referring to the original number, then this statement aligns with the given condition.
Based on the analysis, the correct answer is A: Zero since subtracting zero from a number gives the number itself.

Here 217 – ? = 217
⇒ ? = 217 – 217 = 0

Here 100 – ? = 90 ⇒ ? = 100 – 90 =10

Here 999 – 0 = 999 and 999 – 999 = 0
Hence both are correct.

To determine the correct option, let's analyze the given statements:
1. 812 - 0 = 0: This equation states that when the number 0 is subtracted from 812, the result is 0. This is true because subtracting 0 from any number will always result in the same number.
2. 812 - 812 = 0: This equation states that when 812 is subtracted from itself, the result is 0. This is also true because subtracting a number from itself will always result in 0.
Therefore, both statements are correct.
Answer: B - 2 is correct.

Only 1 is correct.

15 + ? = 25 ⇒ ? = 25 – 15 = 10