IXL | Solve percent equations | 7th grade math

or

Complete the following statement. Write your answer as a decimal or whole number.

% of $3 = $3

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or

Learn with an example

question

Fill in the missing number.

20% of = 5

key idea

A percent is 1 part out of 100.

1%
is
equal
to
1
100
or
0.01.

Proportions can be used to solve percent problems.

part

whole

=

percent

100

solution

The part is 5.

The percent is 20%.

Let n represent the whole.

Write a proportion to solve for n.

5

n

=

20

100

20n

=

5 · 100

20n

=

500

20n ÷ 20

=

500 ÷ 20

n

=

25

20% of 25 = 5

You could also find the answer by writing and solving an equation:

part	=	percentage of whole

5	=	0.2 · n

5	=	0.2n

5 ÷ 0.2	=	0.2n ÷ 0.2

25	=	n

20% of 25 = 5

Looking for more? Try these:

Lesson: Percents

Lesson: Proportions

or

$Confetti$

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Teacher tools

Work it out

Not feeling ready yet? These can help:

O.6Percents of numbers and money amounts

O.5Solve percent problems using strip models

Lesson: Percents

Lesson: Proportions