So, we need to do this calculation!
0.5*0.8 = ?
First we need to convert 0.5 and 0.8 into fractions.
The first number after the decimal point (0.#) is in the tenths place, which is to say that the value there is 1/10 of 1. Simplified version... take the number (Example 5 in the number 0.5) and put it over 10. Do it for both numbers!
[tex] \frac{5}{10}* \frac{8}{10} [/tex]
Before we multiply we should reduce them to simplest forms. 5/10 can be divided by 5 on both terms. 8/10 can be reduced by 2 on both terms. Let's look at the new problem:
[tex] \frac{1}{2}* \frac{4}{5} [/tex]
Multiply across! Multiply the numerator with the numerator, and denominator with the denominator... remember:
[tex] \frac{numerator}{denominator} [/tex]
[tex] \frac{1*4}{2*5} [/tex] = [tex] \frac{4}{10} [/tex]
Reduce the fraction by dividing each number by 2.
So our final answer is:
[tex] \frac{2}{5} [/tex] or 0.4
