Lesson 6.5 Find the % of a Number

The "Percent Box" is really setting up a proportion.

• True

• False

Place the labels in the correct box.

a

b

c

d

100

Whole (of)

Part (is)

%

Reorder the following steps to use a Percent Box.

• One box will be left empty.

• Cross multiply and then divide by the number you haven't used yet.

• Fill in the info from the problem in the correct boxes.

35 is 70% of what number?

• 70

• 35

• 100

• 50

What is 42% of 150?

(a)  

What is 20% of 150?

• 30

• 25

• 20

• 15

If 50 is 25% of a number, what is the number?

• 200

• 150

• 100

• 250

What percent of 100 is 25?

• 25%

• 50%

• 75%

• 20%