Solve Mixed Number Multiplication: 2 4/12 × 1 2/4

Mixed Number Multiplication with Fraction Simplification

2412×124= 2\frac{4}{12}\times1\frac{2}{4}=

❤️ 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
00:00 Solve
00:04 Reduce what we can
00:37 Convert mixed fractions to fractions
00:47 Calculate the numerators
00:55 Make sure to multiply numerator by numerator and denominator by denominator
01:01 Calculate the products
01:05 Now convert to mixed fraction
01:08 Break down 21 into 18 plus 3
01:12 Break down the fraction into whole number and remainder
01:16 Reduce what we can
01:22 Convert proper fraction to whole number, and add to mixed number
01:25 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

2412×124= 2\frac{4}{12}\times1\frac{2}{4}=

2

Step-by-step solution

To solve the given problem, we'll follow these steps:

  • Convert the mixed numbers to improper fractions.
  • Multiply the improper fractions.
  • Simplify the result and convert back to a mixed number if necessary.

Let's work through these steps:

1. Convert each mixed number to an improper fraction:

  • For 24122\frac{4}{12}, first simplify the fraction 412\frac{4}{12} to 13\frac{1}{3}. So, 2132\frac{1}{3} becomes:
  • 2×3+13=73\frac{2 \times 3 + 1}{3} = \frac{7}{3}.

  • For 1241\frac{2}{4}, first simplify the fraction 24\frac{2}{4} to 12\frac{1}{2}. So, 1121\frac{1}{2} becomes:
  • 1×2+12=32\frac{1 \times 2 + 1}{2} = \frac{3}{2}.

2. Multiply the improper fractions:

The multiplication of 73\frac{7}{3} and 32\frac{3}{2} is:

73×32=216\frac{7}{3} \times \frac{3}{2} = \frac{21}{6}.

3. Simplify the resulting fraction 216\frac{21}{6}:

216=72\frac{21}{6} = \frac{7}{2} after dividing the numerator and denominator by 3.

4. Convert the improper fraction back to a mixed number:

72=312\frac{7}{2} = 3\frac{1}{2}.

Thus, the solution to the problem is 312\boxed{3\frac{1}{2}}.

3

Final Answer

312 3\frac{1}{2}

Key Points to Remember

Essential concepts to master this topic
  • Conversion Rule: Change mixed numbers to improper fractions before multiplying
  • Technique: Simplify fractions first: 412=13 \frac{4}{12} = \frac{1}{3} and 24=12 \frac{2}{4} = \frac{1}{2}
  • Check: Convert final answer back to mixed number and verify calculation ✓

Common Mistakes

Avoid these frequent errors
  • Multiplying mixed numbers directly without converting
    Don't multiply 2 × 1 = 2 and 4/12 × 2/4 = 8/48 separately! This gives wrong answers like 2 8/48. Always convert mixed numbers to improper fractions first, then multiply numerators together and denominators together.

Practice Quiz

Test your knowledge with interactive questions

\( 5:\frac{2}{5}= \)

FAQ

Everything you need to know about this question

Why do I need to simplify fractions before converting to improper fractions?

+

Simplifying first makes calculations much easier! In this problem, 412=13 \frac{4}{12} = \frac{1}{3} gives us 213 2\frac{1}{3} instead of working with the messy 2412 2\frac{4}{12} .

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

+

Use the formula: (whole number × denominator + numerator) ÷ denominator. For example: 213=(2×3)+13=73 2\frac{1}{3} = \frac{(2×3)+1}{3} = \frac{7}{3}

When do I know to convert back to a mixed number?

+

If your final answer is an improper fraction (numerator larger than denominator), convert it to a mixed number. 72=312 \frac{7}{2} = 3\frac{1}{2} is easier to understand than 72 \frac{7}{2} .

What if I forget to simplify the final fraction?

+

Your answer will still be mathematically correct, but not in simplest form. Always check if you can divide both numerator and denominator by the same number to simplify.

Can I multiply mixed numbers without converting them first?

+

Technically yes, but it's much more complicated and error-prone! The standard method of converting to improper fractions first is easier and less likely to cause mistakes.

🌟 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