To solve the expression 4 5 x 4 5, we first need to understand the notation. The numbers 4 and 5 can represent a mixed number, where 4 is the whole number and 5 is the numerator of the fraction part. Thus, 4 5 can be converted to an improper fraction.
We convert 4 5 into an improper fraction as follows:
- 4 (whole number) = 4 x 5 = 20
- Add the numerator: 20 + 5 = 25
So, 4 5 as an improper fraction is 25/5.
Now, we calculate 4 5 x 4 5, which translates to (25/5) x (25/5). To multiply fractions, we multiply the numerators and then the denominators:
(25 x 25) / (5 x 5) = 625 / 25
We can simplify the fraction 625/25:
- 625 รท 25 = 25
Hence, 4 5 x 4 5 as a fraction simplifies down to 25.