Solve: 2/3 × 7 2/3 × 3 1/2 Mixed Number Multiplication

Mixed Number Multiplication with Multiple Fractions

Solve the following problem:

23×723×312= \frac{2}{3}\times7\frac{2}{3}\times3\frac{1}{2}=

❤️ 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
00:03 We want to convert from a number and fraction to just a fraction
00:07 We'll do this by multiplying the whole number by the denominator
00:10 and adding it to the numerator
00:14 We'll use the fraction formula in our exercise
00:31 Always solve multiplication and division before addition and subtraction
00:41 Make sure to multiply numerator by numerator and denominator by denominator
00:49 Each time we'll solve one multiplication and then continue
01:01 This is the fraction
01:07 Divide both numerator and denominator by 2
01:16 Break down 161 into 153 plus 8
01:24 Break down the fraction into whole number and remainder
01:32 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

Solve the following problem:

23×723×312= \frac{2}{3}\times7\frac{2}{3}\times3\frac{1}{2}=

2

Step-by-step solution

First, we'll convert the mixed fractions to simple fractions as follows:

23×7×3+23×3×2+12= \frac{2}{3}\times\frac{7\times3+2}{3}\times\frac{3\times2+1}{2}=

Let's solve the exercises in the fraction multiplier:

23×21+23×6+12= \frac{2}{3}\times\frac{21+2}{3}\times\frac{6+1}{2}=

23×233×72= \frac{2}{3}\times\frac{23}{3}\times\frac{7}{2}=

Since the only operation in the exercise is multiplication, we'll combine everything into one exercise as follows:

2×23×73×3×2=46×79×2=32218 \frac{2\times23\times7}{3\times3\times2}=\frac{46\times7}{9\times2}=\frac{322}{18}

3

Final Answer

1789 17\frac{8}{9}

Key Points to Remember

Essential concepts to master this topic
  • Rule: Convert all mixed numbers to improper fractions first
  • Technique: For 723 7\frac{2}{3} , calculate (7×3)+2 = 23, so 233 \frac{23}{3}
  • Check: Final answer 32218 \frac{322}{18} simplifies to 1789 17\frac{8}{9}

Common Mistakes

Avoid these frequent errors
  • Trying to multiply mixed numbers directly without converting
    Don't multiply 2/3 × 7 2/3 × 3 1/2 by treating whole and fractional parts separately = messy calculations and wrong answers! This creates confusion with multiple parts to track. Always convert mixed numbers to improper fractions first, then multiply straight across.

Practice Quiz

Test your knowledge with interactive questions

\( 94+12+6= \)

FAQ

Everything you need to know about this question

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

+

Because mixed numbers are single values, not separate parts! 723 7\frac{2}{3} means seven and two-thirds, which is actually 233 \frac{23}{3} . Splitting them up changes the value completely.

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

+

Use this formula: (whole × denominator) + numerator over the original denominator. For 723 7\frac{2}{3} : (7×3)+2 = 23, so it becomes 233 \frac{23}{3} .

Do I need to simplify my answer at the end?

+

Yes! Always check if your final fraction can be simplified. In this problem, 32218 \frac{322}{18} divides by 2 to give 1619 \frac{161}{9} , which converts to 1789 17\frac{8}{9} .

Can I cancel numbers while multiplying the fractions?

+

Absolutely! Look for common factors between numerators and denominators. In 2×23×73×3×2 \frac{2×23×7}{3×3×2} , you can cancel the 2's to get 23×73×3 \frac{23×7}{3×3} , making calculations easier.

What if my final answer is an improper fraction - should I convert it back?

+

If the answer choices are mixed numbers, yes - convert back! Divide the numerator by denominator: 161 ÷ 9 = 17 remainder 8, so 1619=1789 \frac{161}{9} = 17\frac{8}{9} .

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Commutative, Distributive and Associative Properties 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