1. Percent

2. Review
According to the recipe, it takes 2 cups of sugar to make 36 cookies. How many cups of sugar is need to make 90 cookies?

3. Objectives As a learner, I will…
Write percents as decimals and fractions

4. What do you already know about PERCENT?

5. Here’s a question for you…
What words do you know that contain “cent”?

6. Brain Pop: Percents

7. Key Concept: Modeling Percents
1) 30%
2) 55%
3) 15%

8. Vocabulary Percent – a ratio comparing a number to 100
“per” – means “of”
“cent” – means “100”

9. Key Concept: Writing Percents as Fractions
To write a percent as a fraction:
Write the percent as the numerator
Write 100 as the denominator
Simplify

10. Key Concept: Writing Percents as Fractions
Example: Write 35% as a fraction in simplest form.

11. Key Concept: Writing Percents as Fractions
Example: Up to 55% of the heat lost by your body can be lost through your head. Write 55% as a fraction in simplest form.

12. Key Concept: Writing Percents as Fractions
You try…
Example: Write 44% as a fraction in simplest form.

13. Key Concept: Writing Percents as Decimals
To write a percent as a decimal:
Move the decimal 2 places to the left
Add the decimal and zero

14. Key Concept: Writing Percents as Decimals
Example: Write 35% as a decimal.

15. Key Concept: Writing Percents as Decimals
Example: The water frozen in glaciers makes up almost 75% of the world’s fresh water supply. Write 75% as a decimal.

16. Key Concept: Writing Percents as Decimals
You try…
Example: Write 72% as a decimal.

17. Key Concept: Writing Decimals as Percents
To write a decimal as a percent:
Move the decimal two places to the right
Add a % to the end

18. Key Concept: Writing Decimals as Percents
Example: Write 0.35 as a percent.

19. Key Concept: Writing Decimals as Percents
You try…
Example: Write 0.72 as a percent.

20. Key Concept: Writing Fractions as Percents
To write a fraction as a percent:
Write an equivalent fraction with a denominator of 100
Write the numerator with a percent symbol or
Divide the numerator by the denominator
Multiply by 100 by moving the decimal point to the right two places
Add a % to the end

21. Key Concept: Writing Fractions as Percents
Example: Write 9/25 as a percent.

22. Key Concept: Writing Fractions as Percents
You try…
Example: Write 1/8 as a percent.