Solve the Fraction Division: 2/7 ÷ 3 Step by Step

Fraction Division with Whole Number Divisors

27:3= \frac{2}{7}:3=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Any number divided by 1 is always equal to itself
00:11 Convert division to multiplication by reciprocal
00:24 Make sure to multiply numerator by numerator and denominator by denominator
00:30 Calculate the multiplications
00:34 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

27:3= \frac{2}{7}:3=

2

Step-by-step solution

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

  • Step 1: Rewrite the division as a multiplication by the reciprocal.
  • Step 2: Perform the multiplication of fractions.
  • Step 3: Simplify if necessary and find the solution among the given choices.

Now, let's work through each step:
Step 1: Rewrite the problem 27÷3 \frac{2}{7} \div 3 as a multiplication:
27×13 \frac{2}{7} \times \frac{1}{3}

Step 2: Multiply the numerators and the denominators:
2×17×3=221 \frac{2 \times 1}{7 \times 3} = \frac{2}{21}

Step 3: This fraction is already in its simplest form. Looking at the answer choices, we can conclude the correct answer is 221\frac{2}{21}.

Therefore, the correct solution to the problem is 221 \frac{2}{21} .

3

Final Answer

221 \frac{2}{21}

Key Points to Remember

Essential concepts to master this topic
  • Rule: Dividing by a whole number means multiplying by its reciprocal
  • Technique: Convert 27÷3 \frac{2}{7} ÷ 3 to 27×13 \frac{2}{7} × \frac{1}{3}
  • Check: 221×3=621=27 \frac{2}{21} × 3 = \frac{6}{21} = \frac{2}{7} matches original fraction ✓

Common Mistakes

Avoid these frequent errors
  • Multiplying the fraction by the whole number instead of dividing
    Don't multiply 27×3=67 \frac{2}{7} × 3 = \frac{6}{7} ! This gives a larger number when division should make it smaller. Always remember: dividing by 3 means multiplying by 13 \frac{1}{3} .

Practice Quiz

Test your knowledge with interactive questions

\( \frac{1}{2}:3= \)\( \)\( \)\( \)

FAQ

Everything you need to know about this question

Why do I multiply by the reciprocal instead of just dividing?

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Division by a whole number is the same as multiplication by its reciprocal! When you divide by 3, you're asking "how many groups of 3 fit into this fraction?" - which is the same as multiplying by 13 \frac{1}{3} .

How do I find the reciprocal of a whole number?

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The reciprocal of any whole number is 1 divided by that number. So the reciprocal of 3 is 13 \frac{1}{3} , the reciprocal of 5 is 15 \frac{1}{5} , and so on.

Do I need to simplify 221 \frac{2}{21} ?

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Let's check! The greatest common factor of 2 and 21 is 1, since 2 and 21 share no common factors other than 1. This means 221 \frac{2}{21} is already in simplest form.

Why is my answer smaller than the original fraction?

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That's exactly right! When you divide a number, you get a smaller result. Since 221 \frac{2}{21} is smaller than 27 \frac{2}{7} , your division worked correctly.

What if I get confused about multiplication vs division of fractions?

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Remember this key difference: multiplying fractions makes them smaller (unless multiplying by something greater than 1), while dividing by whole numbers also makes them smaller. Both operations here should give you a result smaller than 27 \frac{2}{7} .

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