Solve the Subtraction Equation: 340-340 = ?

Q: Why does any number minus itself equal zero?

Think of it this way: if you have 340 objects and you take away all 340 of them, you're left with nothing! Zero represents having nothing left.

Q: Does this rule work for all numbers?

Yes! Whether it's 5 - 5, 1,000 - 1,000, or even fractions like $ \frac{1}{2} - \frac{1}{2} $, the answer is always zero when you subtract identical numbers.

Q: What if the numbers look different but are actually the same?

Great question! For example, $ \frac{4}{2} - 2 = 0 $ because $ \frac{4}{2} = 2 $. Always simplify first to see if the numbers are really identical!

Q: How can I check my answer when subtracting?

Use addition to check subtraction! If 340 - 340 = 0, then 0 + 340 should equal 340. Since it does, your answer is correct!

Q: Is zero really a number?

Absolutely! Zero is a real number that represents nothing or no quantity. It's just as valid an answer as any other number in math problems.

Subtraction with Identical Numbers

$340-340=$

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Step-by-step video solution

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00:00 Solve

00:04 Any number minus itself always equals 0

00:10 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

$340-340=$

Step-by-step solution

To solve this problem, we'll follow these steps:

Step 1: Identify that the two numbers involved in the subtraction are both $340$ .
Step 2: Apply the property of subtraction which states that a number minus itself equals zero.

Now, let's work through these steps in detail:
Step 1: The given numbers are $340$ and $340$ . Noticing that these are the same number is crucial because it tells us that we will be subtracting a number from itself.

Step 2: Applying the property of subtraction, we calculate:
$340 - 340 = 0$

The subtraction property that a number minus itself equals zero holds true in this case. So, after performing these steps, we find that the solution to the problem is:

Final Answer

Key Points to Remember

Essential concepts to master this topic

Identity Rule: Any number minus itself always equals zero
Technique: Recognize identical values: 340 - 340 = 0
Check: Verify zero by adding back: 0 + 340 = 340 ✓

Common Mistakes

Avoid these frequent errors

Thinking the answer is the original number
Don't assume 340 - 340 = 340 because you see the same number twice! This ignores the subtraction operation completely. Always remember that subtracting a number from itself removes all of it, leaving zero.

Practice Quiz

Test your knowledge with interactive questions

$1\times1000=$

FAQ

Everything you need to know about this question

Why does any number minus itself equal zero?

Think of it this way: if you have 340 objects and you take away all 340 of them, you're left with nothing! Zero represents having nothing left.

Does this rule work for all numbers?

Yes! Whether it's 5 - 5, 1,000 - 1,000, or even fractions like $\frac{1}{2} - \frac{1}{2}$ , the answer is always zero when you subtract identical numbers.

What if the numbers look different but are actually the same?

Great question! For example, $\frac{4}{2} - 2 = 0$ because $\frac{4}{2} = 2$ . Always simplify first to see if the numbers are really identical!

How can I check my answer when subtracting?

Use addition to check subtraction! If 340 - 340 = 0, then 0 + 340 should equal 340. Since it does, your answer is correct!

Is zero really a number?

Absolutely! Zero is a real number that represents nothing or no quantity. It's just as valid an answer as any other number in math problems.

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