**Solving Percent Problems Using the Percent Box**

**Percent Box**

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

“is/part”.

The lower left square is marked “of/whole”. The upper right

square is

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.

**Finding the Part using the percent Box**

**Finding the percent using the percent Box**

**Finding the whole using the percent Box**

**Finding Percent of Increase OR Decrease**

Related pages

Finding the percent of a

number

Examples: What is 15% of 40? or

what is 35% of 120?

Finding the percent

Example: What percent of 45 is 8?

Finding percent of the whole

Example: What number is 30%

of 100%