1. Aim: what you’ll learn Express percents as fractions and vice versa Express percents as decimal and vice versa. Do Now:

2. Math Vocab. The meaning of
Percents: A ratio of a number to 100 is called a percent. Percent means per hundred and is represented by the symbol %.
Proportion: A proportion is a statement of equality of two ratios.
If then ad = bc.
Ratio: A ratio is a comparison of two numbers by division.

3. Lesson: Percents as Fractions
Express each percent as fraction in simplest form.
45%
120%
0.5%
83 1/3%

4. Practice: Percents as Fractions
Express each percent as fraction in simplest form.
42%
117%
0.8%
16 2/3%

5. Lesson: Percents as decimals
Express each percent as a decimal.
28% 8%
367%
0.45%
Note: To divide a number by 100, move the decimal point two places to the left. To multiply a number by a 100, move the decimal point two places to the right.

6. Practice:
Express each percent as a decimal.
13% 2%
167%
0.83%

7. Summary

8. Homework #7
Class 801, 824 and 831:
SOE: page 284: 20~35