Solve: Adding Fractions 1/10 + 2/10 with Like Denominators

Fraction Addition with Like Denominators

110+210= \frac{1}{10}+\frac{2}{10}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Add under the common denominator
00:06 Calculate the numerator
00:10 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

110+210= \frac{1}{10}+\frac{2}{10}=

2

Step-by-step solution

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

  • Step 1: Identify that both fractions have a common denominator.
  • Step 2: Add the numerators while retaining the common denominator.

Let's work through each step:
Step 1: We have two fractions, 110 \frac{1}{10} and 210 \frac{2}{10} , with the same denominator.

Step 2: We add their numerators:
1+2=3 1 + 2 = 3 .
Keep the common denominator:
Thus, the fraction becomes 310 \frac{3}{10} .

Therefore, the solution to the problem is 310 \frac{3}{10} .

3

Final Answer

310 \frac{3}{10}

Key Points to Remember

Essential concepts to master this topic
  • Rule: When denominators are the same, add only the numerators
  • Technique: Add numerators: 1+2=3 1 + 2 = 3 , keep denominator 10
  • Check: Verify that 310 \frac{3}{10} is in simplest form ✓

Common Mistakes

Avoid these frequent errors
  • Adding both numerators and denominators
    Don't add 110+210 \frac{1}{10} + \frac{2}{10} as 320 \frac{3}{20} ! This creates a completely different fraction value. Always keep the same denominator and only add the numerators when denominators are identical.

Practice Quiz

Test your knowledge with interactive questions

\( \frac{2}{4}+\frac{1}{4}= \)\( \)

FAQ

Everything you need to know about this question

Why don't I add the denominators together?

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The denominator tells you what size pieces you're working with. Since both fractions have pieces of size 110 \frac{1}{10} , you're just counting how many of these pieces you have total!

What if I got 610 \frac{6}{10} as my answer?

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You might have multiplied the numerators instead of adding them. Remember: 1+2=3 1 + 2 = 3 , not 1×2=2 1 × 2 = 2 . Addition means combining, not multiplying!

Do I need to simplify 310 \frac{3}{10} ?

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Let's check: 3 and 10 don't share any common factors besides 1, so 310 \frac{3}{10} is already in simplest form. No further simplification needed!

How can I visualize this problem?

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Think of a pizza cut into 10 equal slices. You have 1 slice plus 2 more slices, giving you 3 slices total out of the 10-slice pizza!

What if the denominators were different?

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Then you'd need to find a common denominator first! But since both fractions already have 10 as the denominator, you can add directly.

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