Solve the Subtraction Equation: 699-699 and Find the Difference

Subtraction with Identical Numbers

699699= 699-699=

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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
00:11 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

699699= 699-699=

2

Step-by-step solution

The problem asks us to calculate 699699699 - 699. In mathematics, there is a straightforward rule: any number subtracted from itself equals zero. This is because you are essentially taking a value away from itself, leaving nothing behind.

  • Step 1: Identify the numbers involved in the subtraction: Both numbers are 699.
  • Step 2: Apply the arithmetic property: Subtract the number from itself: aa=0a - a = 0.
  • Step 3: Perform the calculation: 699699=0699 - 699 = 0.

Thus, according to the property of subtraction, the result of subtracting a number from itself is always zero.

Therefore, the solution to the problem is 00.

3

Final Answer

0

Key Points to Remember

Essential concepts to master this topic
  • Rule: Any number subtracted from itself always equals zero
  • Technique: Apply the property aa=0 a - a = 0 directly
  • Check: Verify that 699 - 699 leaves no remainder ✓

Common Mistakes

Avoid these frequent errors
  • Calculating digit by digit instead of using the property
    Don't try to subtract 699 - 699 digit by digit = unnecessarily complex work! This wastes time and creates chances for arithmetic errors. Always recognize when subtracting identical numbers and apply the zero property directly.

Practice Quiz

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\( 1\times1000= \)

FAQ

Everything you need to know about this question

Why is 699 - 699 equal to 0 and not something else?

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When you subtract a number from itself, you're taking away exactly what you started with. It's like having 699 apples and giving away all 699 apples - you have zero apples left!

Does this work for any number, not just 699?

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Yes! This is a fundamental property of subtraction. Whether it's 5 - 5, 1,000 - 1,000, or even decimals like 3.7 - 3.7, the answer is always 0 0 .

What if I accidentally calculated and got a different answer?

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Double-check your work! The most common error is misreading the numbers or doing unnecessary digit-by-digit subtraction. Remember: identical numbers always subtract to zero.

Is there a faster way to solve these problems?

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Absolutely! As soon as you see identical numbers in a subtraction problem, you can immediately write 0 0 as your answer. No calculation needed!

Can I use this property in more complex problems?

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Yes! Look for identical terms in algebraic expressions. For example, in 5x+35x 5x + 3 - 5x , the 5x5x=0 5x - 5x = 0 , leaving just 3 3 .

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