Question

Notebooks cost $1.20 each. This weekend they will be $.80 What percentage is the sale?

Answer 1

The sale is 33% off notebooks. This can be found by first subtracting .8 from 1.2

1.2-.8=.4    Now divide .4 by 1.2 to get your answer.

$\frac{.4}{1.2}$=.33

.33=33%

You can also solve this mentally because if you know your basic multiplication tables, 3*4=12 and so $\frac{2}{3}$ of 12 would equal 8.

Does you understand it now?