Solve: 4 × 3⅔ Mixed Number Multiplication Problem

Mixed Number Multiplication with Whole Numbers

4×323= 4\times3\frac{2}{3}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 First convert mixed fraction to fraction
00:20 Raise the multiplication to numerator
00:26 Calculate the multiplication
00:31 Now convert to mixed fraction
00:37 Break down 44 into 42 plus 2
00:41 Break down the fraction into whole fraction and remainder
00:47 Convert whole fraction to whole number, and add to mixed fraction
00:53 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

4×323= 4\times3\frac{2}{3}=

2

Step-by-step solution

To solve the problem of multiplying the whole number 4 by the mixed number 3233\frac{2}{3}, follow these steps:

  • Step 1: Convert the mixed number 3233\frac{2}{3} into an improper fraction. The whole number part is 3, and the fractional part is 23\frac{2}{3}. Use the formula: Improper Fraction=(3×3)+23=9+23=113. \text{Improper Fraction} = \frac{(3 \times 3) + 2}{3} = \frac{9 + 2}{3} = \frac{11}{3}.
  • Step 2: Multiply the improper fraction 113\frac{11}{3} by the whole number 4: 4×113=4×113=443. 4 \times \frac{11}{3} = \frac{4 \times 11}{3} = \frac{44}{3}.
  • Step 3: Convert the improper fraction 443\frac{44}{3} back to a mixed number. Divide 44 by 3: - 44 divided by 3 is 14 with a remainder of 2. - Therefore, 443=1423\frac{44}{3} = 14\frac{2}{3}.

Thus, the product of 44 and 3233\frac{2}{3} is 142314\frac{2}{3}.

The correct answer is 1423\boxed{14\frac{2}{3}}.

3

Final Answer

1423 14\frac{2}{3}

Key Points to Remember

Essential concepts to master this topic
  • Conversion Rule: Change mixed numbers to improper fractions first
  • Technique: Convert 323 3\frac{2}{3} to 113 \frac{11}{3} using (3×3)+2 = 11
  • Check: Verify 1423 14\frac{2}{3} equals 443 \frac{44}{3} by dividing 44÷3 = 14 remainder 2 ✓

Common Mistakes

Avoid these frequent errors
  • Multiplying the whole number by each part separately
    Don't multiply 4×3 = 12 and 4×⅔ = 8/3, then add = wrong answer! This treats the mixed number as addition instead of one unified value. Always convert to improper fraction first, then multiply as one operation.

Practice Quiz

Test your knowledge with interactive questions

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

FAQ

Everything you need to know about this question

Why can't I just multiply 4 times 3 and 4 times 2/3 separately?

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Because a mixed number like 323 3\frac{2}{3} is one single number, not two separate parts! Think of it like 3.67 - you wouldn't multiply the 3 and .67 separately. Converting to an improper fraction keeps it as one unified value.

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

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Use this formula: Multiply the whole number by the denominator, add the numerator, keep the same denominator. For 323 3\frac{2}{3} : (3×3)+2 = 11, so it becomes 113 \frac{11}{3} .

Is there an easier way to do this problem?

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You can use the distributive property: 4×323=4×3+4×23=12+83=12+223=1423 4 \times 3\frac{2}{3} = 4 \times 3 + 4 \times \frac{2}{3} = 12 + \frac{8}{3} = 12 + 2\frac{2}{3} = 14\frac{2}{3} . Both methods work, but the improper fraction method is more reliable!

How do I convert the improper fraction back to a mixed number?

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Divide the numerator by the denominator! For 443 \frac{44}{3} : 44 ÷ 3 = 14 with remainder 2. The quotient (14) becomes the whole number, remainder (2) stays as numerator, denominator (3) stays the same: 1423 14\frac{2}{3} .

What if I get confused with all these steps?

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Break it down: Convert → Multiply → Convert back. Practice with easier numbers first, like 2×112 2 \times 1\frac{1}{2} . Remember, math is about understanding patterns - once you see the pattern, it becomes much easier!

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