Solve Mixed Number Multiplication: 4⁴/₇ × 2½ Step-by-Step

Question

447×212= 4\frac{4}{7}\times2\frac{1}{2}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Convert each mixed number to an improper fraction.
  • Multiply the two improper fractions.
  • Convert the result back to a mixed number.

Now, let's work through each step:

Step 1: Convert the mixed numbers to improper fractions.
For 447 4\frac{4}{7} :
Multiply the whole number by the denominator: 4×7=284 \times 7 = 28.
Add the numerator to this product: 28+4=3228 + 4 = 32.
Thus, 447=327 4\frac{4}{7} = \frac{32}{7} .

For 212 2\frac{1}{2} :
Multiply the whole number by the denominator: 2×2=42 \times 2 = 4.
Add the numerator: 4+1=54 + 1 = 5.
Thus, 212=52 2\frac{1}{2} = \frac{5}{2} .

Step 2: Multiply the two improper fractions:
327×52=32×57×2=16014\frac{32}{7} \times \frac{5}{2} = \frac{32 \times 5}{7 \times 2} = \frac{160}{14}.

Step 3: Simplify 16014\frac{160}{14} and convert to a mixed number:
First, simplify the fraction by finding the greatest common divisor of 160 and 14, which is 2.
16014=160÷214÷2=807\frac{160}{14} = \frac{160 \div 2}{14 \div 2} = \frac{80}{7}.

Convert 807\frac{80}{7} to a mixed number:
Divide 80 by 7, which gives a quotient of 11 and a remainder of 3.
Thus, 807=1137\frac{80}{7} = 11\frac{3}{7}.

Therefore, the solution to the problem is 1137 11\frac{3}{7} .

Answer

1137 11\frac{3}{7}