Solve the Fraction Sum: 4/12 + 1/3 + 1/6 Step-by-Step

Fraction Addition with Common Denominators

Solve the following exercise:

412+13+16=? \frac{4}{12}+\frac{1}{3}+\frac{1}{6}=\text{?}

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:10 Let's start solving the problem.
00:13 First, we need to find the smallest common denominator.
00:17 So, we multiply four and two, to get the common denominator, twelve.
00:22 Don't forget! Multiply both the numerator and the denominator.
00:33 Now, let's calculate those multiplications.
00:42 Add the results under the common denominator.
00:47 Time to calculate the numerator.
00:50 And that's how we find the solution. Great job!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve the following exercise:

412+13+16=? \frac{4}{12}+\frac{1}{3}+\frac{1}{6}=\text{?}

2

Step-by-step solution

To solve the problem, we start by finding the least common denominator (LCD) for the fractions 412 \frac{4}{12} , 13 \frac{1}{3} , and 16 \frac{1}{6} .

The denominators are 12, 3, and 6. We need to find the smallest number that is a multiple of each of these numbers. The LCD of 12, 3, and 6 is 12.

Next, we convert each fraction to have this common denominator:

  • 412 \frac{4}{12} already has 12 as the denominator.
  • 13 \frac{1}{3} can be converted to have 12 as the denominator by multiplying both the numerator and the denominator by 4: 13=1×43×4=412\frac{1}{3} = \frac{1 \times 4}{3 \times 4} = \frac{4}{12}.
  • 16 \frac{1}{6} can be converted to have 12 as the denominator by multiplying both the numerator and the denominator by 2: 16=1×26×2=212\frac{1}{6} = \frac{1 \times 2}{6 \times 2} = \frac{2}{12}.

Now, we simply add these fractions:

412+412+212=4+4+212=1012 \frac{4}{12} + \frac{4}{12} + \frac{2}{12} = \frac{4 + 4 + 2}{12} = \frac{10}{12} .

Therefore, the solution to the problem is 1012 \frac{10}{12} .

3

Final Answer

1012 \frac{10}{12}

Key Points to Remember

Essential concepts to master this topic
  • LCD Rule: Find the smallest number divisible by all denominators
  • Technique: Convert 13 \frac{1}{3} to 412 \frac{4}{12} by multiplying by 4
  • Check: Add numerators only: 4 + 4 + 2 = 10, keep denominator 12 ✓

Common Mistakes

Avoid these frequent errors
  • Adding denominators together
    Don't add denominators like 12 + 3 + 6 = 21 and get 621 \frac{6}{21} ! This completely ignores the fraction values and gives meaningless results. Always find the LCD first, convert all fractions to equivalent fractions with that denominator, then add only the numerators.

Practice Quiz

Test your knowledge with interactive questions

\( \)\( \frac{4}{5}+\frac{1}{5}= \)

FAQ

Everything you need to know about this question

Why is 12 the LCD when we have denominators 12, 3, and 6?

+

The LCD is the smallest number that all denominators divide into evenly. Since 12 ÷ 12 = 1, 12 ÷ 3 = 4, and 12 ÷ 6 = 2, we know 12 works perfectly!

How do I convert 13 \frac{1}{3} to twelfths?

+

Since 3 × 4 = 12, multiply both numerator and denominator by 4: 1×43×4=412 \frac{1×4}{3×4} = \frac{4}{12} . This keeps the fraction's value the same!

Do I need to simplify 1012 \frac{10}{12} ?

+

You can! 1012=56 \frac{10}{12} = \frac{5}{6} when you divide both parts by 2. Both forms are correct, but simplified form is usually preferred.

What if the fractions don't have a nice LCD like 12?

+

List the multiples of each denominator until you find the first one that appears in all lists. For example, with denominators 4 and 6: multiples of 4 are 4, 8, 12... and multiples of 6 are 6, 12... so LCD = 12.

Can I add fractions in a different order?

+

Yes! Addition is commutative, so 16+412+13 \frac{1}{6} + \frac{4}{12} + \frac{1}{3} gives the same result. Just make sure to convert all fractions to the same denominator first.

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Operations with Fractions questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations