The percent box takes the mystery out of finding where to put
each of the
numbers in a percent problem.
The main box is divided into four squares.
The upper left square is marked
The lower left square is marked “of/whole”. The upper right
marked “percent”. Finally, the bottom right square is always
filled in with “100”.
After placing the numbers in the appropriate squares, cross-
multiply the numbers
in the two filled-in squares that are diagonal from each other.
Divide the answer
by the leftover number.