Solve Fraction Division: 1/2 ÷ 2/3 Step-by-Step

Fraction Division with Reciprocal Multiplication

Complete the following exercise:

12:23=? \frac{1}{2}:\frac{2}{3}=\text{?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:04 Let's solve this problem step by step.
00:07 Here's a helpful tip: instead of dividing, we can multiply by the reciprocal, which makes things easier.
00:14 To get the reciprocal, we simply flip the fraction upside down - moving the bottom number to the top, and the top number to the bottom.
00:22 Now, remember this important rule: when multiplying fractions, multiply the top numbers together, and do the same for the bottom numbers.
00:30 Let's work out these multiplications carefully.
00:34 And there we have it! That's our final answer to the problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Complete the following exercise:

12:23=? \frac{1}{2}:\frac{2}{3}=\text{?}

2

Step-by-step solution

To solve the division of fractions problem 12÷23 \frac{1}{2} \div \frac{2}{3} , we follow these steps:

  • Step 1: Rewrite the division problem as multiplication by the reciprocal: 12÷23 \frac{1}{2} \div \frac{2}{3} becomes 12×32 \frac{1}{2} \times \frac{3}{2} .
  • Step 2: Multiply the numerators together: 1×3=3 1 \times 3 = 3 .
  • Step 3: Multiply the denominators together: 2×2=4 2 \times 2 = 4 .
  • Step 4: Form the new fraction from the resulting numerator and denominator: 34 \frac{3}{4} .

Thus, the result of dividing 12 \frac{1}{2} by 23 \frac{2}{3} is 34 \frac{3}{4} .

The correct answer is 34\frac{3}{4}.

3

Final Answer

34 \frac{3}{4}

Key Points to Remember

Essential concepts to master this topic
  • Division Rule: Dividing by a fraction means multiplying by its reciprocal
  • Technique: 12÷23=12×32=34 \frac{1}{2} ÷ \frac{2}{3} = \frac{1}{2} × \frac{3}{2} = \frac{3}{4}
  • Check: 34×23=612=12 \frac{3}{4} × \frac{2}{3} = \frac{6}{12} = \frac{1}{2} matches original dividend ✓

Common Mistakes

Avoid these frequent errors
  • Attempting to divide numerators and denominators directly
    Don't divide 12÷23 \frac{1}{2} ÷ \frac{2}{3} as 1÷22÷3=0.50.67 \frac{1÷2}{2÷3} = \frac{0.5}{0.67} = wrong answer! This creates decimal confusion and doesn't follow fraction rules. Always flip the second fraction to its reciprocal and multiply.

Practice Quiz

Test your knowledge with interactive questions

\( \frac{1}{3}+\frac{1}{4}= \)

FAQ

Everything you need to know about this question

Why do I flip the second fraction and multiply instead of dividing?

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Division by a fraction is the same as multiplication by its reciprocal. Think of it this way: dividing by 23 \frac{2}{3} asks "how many 23 \frac{2}{3} 's fit into 12 \frac{1}{2} ?" Flipping and multiplying gives us this answer directly!

How do I find the reciprocal of a fraction?

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Simply flip the numerator and denominator! The reciprocal of 23 \frac{2}{3} is 32 \frac{3}{2} . For whole numbers like 5, write it as 51 \frac{5}{1} first, then flip to get 15 \frac{1}{5} .

What if my answer is bigger than 1 when dividing fractions?

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That's completely normal! When you divide by a fraction smaller than 1, your answer will be larger than the original number. For example, 12÷14=2 \frac{1}{2} ÷ \frac{1}{4} = 2 because four quarters fit into a half twice.

Do I need to simplify my final answer?

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Always simplify to lowest terms! In this problem, 34 \frac{3}{4} is already simplified since 3 and 4 share no common factors. Check if your numerator and denominator have any common factors to divide out.

How can I check if my division answer is correct?

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Multiply your answer by the original divisor (second fraction). If you get the dividend (first fraction) back, you're right! Here: 34×23=612=12 \frac{3}{4} × \frac{2}{3} = \frac{6}{12} = \frac{1}{2}

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