Solve Mixed Number Division: 1⅝ ÷ 1⅓ Step by Step

Mixed Number Division with Improper Fractions

157:113= 1\frac{5}{7}:1\frac{1}{3}=

❤️ 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
00:06 Let's solve this problem together.
00:09 First, convert any mixed fractions into improper fractions.
00:29 Next, express division as a single fraction.
00:36 Now, multiply by the reciprocal of the divisor.
00:42 Let's calculate the multiplication here.
00:49 Convert the result back into a mixed fraction.
00:54 Break down thirty-six into twenty-eight plus eight.
00:58 Separate the fraction into a whole number and the remainder.
01:02 Simplify where possible to reduce the fraction.
01:06 Convert the fraction into a whole number and add it to the mixed number.
01:11 Great work! And that is how we solve the problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

157:113= 1\frac{5}{7}:1\frac{1}{3}=

2

Step-by-step solution

To solve this division of mixed numbers, follow these detailed steps:

  • Step 1: Convert each mixed number to an improper fraction.
  • Step 2: Divide by multiplying by the reciprocal of the second fraction.
  • Step 3: Simplify the resulting fraction and convert it back to a mixed number, if necessary.

Let's perform each step with the given numbers:

Step 1: Convert the mixed numbers to improper fractions.
157=1×7+57=127 1\frac{5}{7} = \frac{1 \times 7 + 5}{7} = \frac{12}{7}
113=1×3+13=43 1\frac{1}{3} = \frac{1 \times 3 + 1}{3} = \frac{4}{3}

Step 2: Instead of dividing by 43\frac{4}{3}, multiply by its reciprocal, which is 34\frac{3}{4}.
127×34=12×37×4=3628 \frac{12}{7} \times \frac{3}{4} = \frac{12 \times 3}{7 \times 4} = \frac{36}{28}

Step 3: Simplify the fraction 3628\frac{36}{28}.
Both the numerator and the denominator are divisible by 4:
36÷428÷4=97 \frac{36 \div 4}{28 \div 4} = \frac{9}{7}

Convert 97\frac{9}{7} back to a mixed number:
Since 99 divided by 77 is 11 with a remainder of 22, it becomes:
127 1\frac{2}{7}

Therefore, the solution to the problem is 127 1\frac{2}{7} .

3

Final Answer

127 1\frac{2}{7}

Key Points to Remember

Essential concepts to master this topic
  • Conversion Rule: Change mixed numbers to improper fractions first
  • Division Technique: Multiply by reciprocal: 127×34=3628 \frac{12}{7} \times \frac{3}{4} = \frac{36}{28}
  • Final Check: Convert back to mixed number and verify: 97=127 \frac{9}{7} = 1\frac{2}{7}

Common Mistakes

Avoid these frequent errors
  • Trying to divide mixed numbers directly
    Don't attempt to divide 157÷113 1\frac{5}{7} ÷ 1\frac{1}{3} without converting = confusing and wrong results! Mixed numbers can't be divided in their original form. Always convert to improper fractions first, then multiply by the reciprocal.

Practice Quiz

Test your knowledge with interactive questions

\( 1\frac{4}{5}\times1\frac{1}{3}= \)

FAQ

Everything you need to know about this question

Why can't I just divide the whole numbers and fractions separately?

+

Because mixed numbers represent single values, not separate parts! 157 1\frac{5}{7} means "one and five-sevenths," which equals 127 \frac{12}{7} total.

How do I convert a mixed number to an improper fraction quickly?

+

Use this formula: Multiply the whole number by the denominator, then add the numerator. For 157 1\frac{5}{7} : (1×7) + 5 = 12, so it becomes 127 \frac{12}{7} .

What's the reciprocal and why do I multiply by it?

+

The reciprocal flips a fraction upside down. Instead of dividing by 43 \frac{4}{3} , you multiply by 34 \frac{3}{4} . This is because division by a fraction equals multiplication by its reciprocal!

How do I know when my final fraction needs to be a mixed number?

+

If your improper fraction's numerator is larger than the denominator, convert it! 97 \frac{9}{7} becomes 127 1\frac{2}{7} because 9÷7 = 1 remainder 2.

What if my answer doesn't simplify evenly?

+

Always look for common factors first! In our example, both 36 and 28 are divisible by 4, giving us 97 \frac{9}{7} . If no common factors exist, your fraction is already in simplest form.

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Mixed 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