Solve the Subtraction Problem: 70 - 0 = ?

Q: Why doesn't 70 - 0 equal 0?

Great question! When you subtract zero, you're taking nothing away. Think of it like having 70 cookies and eating 0 cookies - you still have all 70 cookies!

Q: What's the difference between 70 - 0 and 70 × 0?

These are completely different operations! 70 - 0 = 70 (taking away nothing), but 70 × 0 = 0 (zero groups of 70). Don't mix up subtraction and multiplication with zero.

Q: Does this rule work with negative numbers too?

Yes! The zero property works with any number. For example, $ -5 - 0 = -5 $ and $ 100 - 0 = 100 $. Subtracting zero never changes the original number.

Q: How can I remember this rule?

Think of subtraction as "taking away". If you take away zero (nothing), the original amount stays exactly the same. It's like removing zero items from a box - everything is still there!

Q: Is there a pattern with adding zero too?

Absolutely! Just like 70 - 0 = 70, we also have 70 + 0 = 70. Zero is the identity element - it doesn't change numbers in addition or subtraction.

Subtraction with Zero Property

$70-0=$

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations

00:00 Solve

00:04 Any number minus 0 equals the number itself

00:09 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

$70-0=$

Step-by-step solution

To solve this problem, we need to perform the subtraction operation $70 - 0$ .

According to the properties of zero in arithmetic, subtracting zero from any number does not change the value of that number. Therefore:

Step 1: Identify the operation: $70 - 0$
Step 2: Recognize that subtracting zero keeps the original number the same.
Step 3: The result is simply $70$ .

Thus, the solution to the problem is $70$ .

Final Answer

Key Points to Remember

Essential concepts to master this topic

Zero Property: Subtracting zero from any number leaves it unchanged
Technique: For 70 - 0, recognize that 70 stays exactly 70
Check: Verify that 70 - 0 equals 70 by counting backwards ✓

Common Mistakes

Avoid these frequent errors

Confusing subtraction with multiplication by zero
Don't think 70 - 0 = 0 like multiplication would! This confuses the zero property rules and gives the wrong answer. Always remember that subtracting zero keeps the original number unchanged.

Practice Quiz

Test your knowledge with interactive questions

$1\times1000=$

FAQ

Everything you need to know about this question

Why doesn't 70 - 0 equal 0?

Great question! When you subtract zero, you're taking nothing away. Think of it like having 70 cookies and eating 0 cookies - you still have all 70 cookies!

What's the difference between 70 - 0 and 70 × 0?

These are completely different operations! 70 - 0 = 70 (taking away nothing), but 70 × 0 = 0 (zero groups of 70). Don't mix up subtraction and multiplication with zero.

Does this rule work with negative numbers too?

Yes! The zero property works with any number. For example, $-5 - 0 = -5$ and $100 - 0 = 100$ . Subtracting zero never changes the original number.

How can I remember this rule?

Think of subtraction as "taking away". If you take away zero (nothing), the original amount stays exactly the same. It's like removing zero items from a box - everything is still there!

Is there a pattern with adding zero too?

Absolutely! Just like 70 - 0 = 70, we also have 70 + 0 = 70. Zero is the identity element - it doesn't change numbers in addition or subtraction.

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