Calculate the Difference: 0.25 - 0.1 Decimal Subtraction

Q: Why do I need to write 0.1 as 0.10?

Writing 0.1 as 0.10 helps you see that both numbers have the same number of decimal places. This makes subtraction much easier and prevents mistakes with place values!

Q: What if I forget to align the decimal points?

You'll get the wrong answer! Always draw a vertical line through the decimal points first. This keeps tenths with tenths and hundredths with hundredths.

Q: Can I do this problem in my head?

Yes! Think: 25 cents minus 10 cents equals 15 cents, so $ 0.25 - 0.1 = 0.15 $. Money analogies make decimal subtraction easier!

Q: How do I check if 0.15 is correct?

Use addition to check subtraction: $ 0.15 + 0.1 = 0.25 $. If you get back to your starting number, your subtraction is right!

Q: What's the difference between 0.1 and 0.10?

They're exactly the same value! Adding zeros after the last digit in a decimal doesn't change its value, just like $5.00 equals $5.

Decimal Subtraction with Different Place Values

$0.25-0.1=$

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations

00:05 Let's solve this problem together.

00:10 We'll use long subtraction to help us calculate the answer.

00:17 Let's subtract, and substitute where needed.

00:25 And there you have it! That's how we find the solution.

Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

$0.25-0.1=$

Step-by-step solution

To solve the subtraction problem $0.25 - 0.1$ , follow these steps:

Step 1: Align the numbers vertically, ensuring that the decimal points line up:

   0.25
-  0.10
-------

Step 2: Start subtracting from the rightmost column. The tenths position involves subtracting $5$ from $0$ , resulting in $5$ .
Step 3: Move to the next column to the left. Subtract $0.1$ from $0.2$ , which gives $0.15$ .
Step 4: The integer part of both numbers is zero, there is nothing to subtract here.

The result of the subtraction is $0.15$ .

Final Answer

$0.15$

Key Points to Remember

Essential concepts to master this topic

Alignment: Line up decimal points vertically before subtracting
Technique: Add trailing zeros: 0.1 becomes 0.10 for easier calculation
Check: Addition reversal: 0.15 + 0.1 = 0.25 confirms our answer ✓

Common Mistakes

Avoid these frequent errors

Subtracting digits without aligning decimal points
Don't subtract 25 - 1 = 24 thinking the answer is 0.24! This ignores place values completely. Always align decimal points first so tenths subtract from tenths and hundredths from hundredths.

Practice Quiz

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FAQ

Everything you need to know about this question

Why do I need to write 0.1 as 0.10?

Writing 0.1 as 0.10 helps you see that both numbers have the same number of decimal places. This makes subtraction much easier and prevents mistakes with place values!

What if I forget to align the decimal points?

You'll get the wrong answer! Always draw a vertical line through the decimal points first. This keeps tenths with tenths and hundredths with hundredths.

Can I do this problem in my head?

Yes! Think: 25 cents minus 10 cents equals 15 cents, so $0.25 - 0.1 = 0.15$ . Money analogies make decimal subtraction easier!

How do I check if 0.15 is correct?

Use addition to check subtraction: $0.15 + 0.1 = 0.25$ . If you get back to your starting number, your subtraction is right!

What's the difference between 0.1 and 0.10?

They're exactly the same value! Adding zeros after the last digit in a decimal doesn't change its value, just like $5.00 equals$ 5.

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Calculate the Difference: 0.25 - 0.1 Decimal Subtraction

Decimal Subtraction with Different Place Values

❤️ Continue Your Math Journey!

Step-by-step video solution

Step-by-step written solution

Understand the problem

Step-by-step solution

Final Answer

Key Points to Remember

Common Mistakes

Practice Quiz

FAQ

Why do I need to write 0.1 as 0.10?

What if I forget to align the decimal points?

Can I do this problem in my head?

How do I check if 0.15 is correct?

What's the difference between 0.1 and 0.10?

🌟 Unlock Your Math Potential

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