# Musical Math Materials

DE Marker

15 Small White Boards

Reminders

Get out your agenda if you see your name below. You need to come to my room tomorrow.

Period 2

Anthony N.

Myranda M.

Period 7

Jacob B.

Convert the following fractions into percents.

12

1.

78

2.

5

9

3.

65

88

4.

76

87

5-3 Algebra: The Percent

Proportion

How do I solve problems using the percent proportion?

Questions:

What is the percent proportion?

Notes:

Percent Proportion – a proportion where one ratio is a fraction and the second ratio is a fraction with a denominator of 100

Example:

How do I find the percent?

17

25

=

68

100

= 68%

22 is what percent of 110?

Set up a proportion

22

110

= 𝑛

100

Solve for n n = 20, so 22 is 20% of 110

Questions:

What are the different ways of using the percent proportion?

Notes:

What number is 80% of 500?

𝑛

500

=

80

100

14 is 32% of what number?

14 𝑛

32

=

100

6 is what percent of 5?

6

5

= 𝑛

100

### Concept Check

Work in groups of 2 using a WHITE BOARD.

SET UP the following percent proportions with the correct placement of the variable, n.

1.70 is what percent of 280?

2.What number is 60% of 90?

3.150 is 75% of what number?

Pgs. 266; 10-25

Cornell Notes

Summary