Question

How do you evaluate `23.5\times 24.5`?

Answer 1

`23.5 xx 24.5 = 575.75`

Explanation:

One way is to note that:

`23.5 xx 24.5 = (24 - 1/2)(24 + 1/2) = 24^2-(1/2)^2 = 576-1/4 = 575.75`