Introduction to Percent Proportion

Presentation

•

Mathematics

•

7th Grade

•

Hard

Joseph Anderson

FREE Resource

9 Slides • 5 Questions

12/6 Percent Introduction

by Samantha Ratliff

Open Ended

How would you describe what a "percent" is?

Type response here

Can you answer this?

A toy skateboard is on sale for 50% off. The original price is $12. What is the new price?

What do you notice about the answer?

A toy skateboard is on sale for 50% off. The original price is $12.

The new price is $6.

More? Less? Part? Whole?

Can you answer this?!

A real skateboard is on sale for 28% off. The original price is $48. What is the new price?

We can use proportions!

REMEMBER THIS: (aka write it down in your notebook)

25% of 65 is?

56% of 45 is what number?

What percent of 69 is 153?

What percent of 1800 is 36?

Multiple Choice

Try it :)

12 is 80% of what number?

9.6

666

Multiple Choice

Try it :)

20 is 40% of what number?

800

Multiple Choice

How do you set this up?

What is 25% of 250?

$\frac{25}{100}=\frac{250}{x}$

$\frac{25}{100}=\frac{x}{250}$

$\frac{250}{100}=\frac{25}{x}$

Multiple Choice

How do you set this up?

15 is what percent of 90?

$\frac{15}{90}=\frac{x}{100}$

$\frac{90}{15}=\frac{x}{100}$

$\frac{15}{90}=\frac{100}{x}$

12/6 Percent Introduction

by Samantha Ratliff

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