what is 2 1/2 x 3 1/4

1 answer

To multiply the mixed numbers \(2 \frac{1}{2}\) and \(3 \frac{1}{4}\), we first convert them to improper fractions.

  1. Convert \(2 \frac{1}{2}\) to an improper fraction: \[ 2 \frac{1}{2} = \frac{2 \times 2 + 1}{2} = \frac{4 + 1}{2} = \frac{5}{2} \]

  2. Convert \(3 \frac{1}{4}\) to an improper fraction: \[ 3 \frac{1}{4} = \frac{3 \times 4 + 1}{4} = \frac{12 + 1}{4} = \frac{13}{4} \]

Now, multiply the two improper fractions: \[ \frac{5}{2} \times \frac{13}{4} = \frac{5 \times 13}{2 \times 4} = \frac{65}{8} \]

Next, we can convert \(\frac{65}{8}\) back to a mixed number:

  • Divide \(65\) by \(8\): \(65 \div 8 = 8\) remainder \(1\)
  • So, \(\frac{65}{8} = 8 \frac{1}{8}\)

The final answer is: \[ 2 \frac{1}{2} \times 3 \frac{1}{4} = 8 \frac{1}{8} \]