Solve the Fraction Division: 10/8 ÷ 2 Step-by-Step

Fraction Division with Whole Numbers

Complete the following exercise:

108:2=? \frac{10}{8}:2=\text{?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Let's write the number as a fraction
00:09 Any number divided by 1 is always equal to itself
00:13 Make sure to divide numerator by numerator and denominator by denominator
00:19 Let's calculate the quotients
00:22 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

Complete the following exercise:

108:2=? \frac{10}{8}:2=\text{?}

2

Step-by-step solution

To solve the problem of dividing the fraction 108\frac{10}{8} by the whole number 2, we will follow these steps:

  • Step 1: Rewrite the division as multiplication by the reciprocal.
  • Step 2: Simplify the resulting fraction, if possible.

Now, let's work through each step:

Step 1: We need to divide 108\frac{10}{8} by 2. According to the division rule for fractions, dividing by a whole number is equivalent to multiplying by its reciprocal. Therefore, we will multiply 108\frac{10}{8} by 12\frac{1}{2}:

108×12 \frac{10}{8} \times \frac{1}{2}

Step 2: Now, perform the multiplication:

10×18×2=1016 \frac{10 \times 1}{8 \times 2} = \frac{10}{16}

Next, simplify the fraction 1016\frac{10}{16}. The greatest common divisor of 10 and 16 is 2:

Divide the numerator and the denominator by their greatest common divisor:

10÷216÷2=58 \frac{10 \div 2}{16 \div 2} = \frac{5}{8}

Therefore, the simplified result of the division is 58\frac{5}{8}.

From the answer choices provided, the correct choice is 58\frac{5}{8}.

Thus, the solution to the problem is 58\frac{5}{8}.

3

Final Answer

58 \frac{5}{8}

Key Points to Remember

Essential concepts to master this topic
  • Rule: To divide by a whole number, multiply by its reciprocal
  • Technique: Convert 108÷2 \frac{10}{8} ÷ 2 to 108×12 \frac{10}{8} × \frac{1}{2}
  • Check: Verify 58×2=108 \frac{5}{8} × 2 = \frac{10}{8} gives original fraction ✓

Common Mistakes

Avoid these frequent errors
  • Dividing the numerator by the whole number only
    Don't just divide 10 ÷ 2 = 5 to get 58 \frac{5}{8} without proper steps! This accidentally gives the right answer but misses the fundamental concept. Always convert division to multiplication by the reciprocal first.

Practice Quiz

Test your knowledge with interactive questions

Complete the following exercise:

\( \frac{1}{2}:\frac{1}{2}=\text{?} \)

FAQ

Everything you need to know about this question

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

+

Dividing by a whole number means multiplying by its reciprocal. This keeps the fraction format consistent and makes the math clearer. For example, ÷2 becomes ×12 \frac{1}{2} .

What's the reciprocal of a whole number?

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The reciprocal of any whole number is 1 over that number. So reciprocal of 2 is 12 \frac{1}{2} , reciprocal of 5 is 15 \frac{1}{5} , and so on.

Do I always need to simplify my final answer?

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Yes, always simplify! Find the greatest common divisor (GCD) of numerator and denominator. For 1016 \frac{10}{16} , GCD is 2, so divide both by 2 to get 58 \frac{5}{8} .

How do I multiply fractions step by step?

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Multiply numerator × numerator and denominator × denominator:

  • 108×12=10×18×2=1016 \frac{10}{8} × \frac{1}{2} = \frac{10×1}{8×2} = \frac{10}{16}

Can I check my answer by working backwards?

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Absolutely! Multiply your answer by the original divisor: 58×2=108 \frac{5}{8} × 2 = \frac{10}{8} . If you get back to the original fraction, you're correct!

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