So,
I like to simplify a fraction first. This is what I do when I'm in a store trying to find the unit price.
[tex] \frac{14}{16} [/tex]
Factor.
[tex] \frac{2*7}{2*2*2*2} [/tex]
Cross out ones.
[tex] \frac{7}{2*2*2} [/tex]
Multiply it out.
[tex] \frac{7}{8} [/tex]
In my head, I remember that one-eighth is equal to 0.125.
So seven-eighths is equal to 0.125 times 7.
0.125 * 7 = 0.875
Convert to percent form.
0.875 --> 87.5%
James answered 87.5% of his quiz correctly.
I actually have the decimal equivalents for eighths in my head when I'm shopping. So once I get seven-eighths, I immediately know how much that is. I can also subtract 0.125 from 1.000 to get seven-eighths.
