Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our Privacy Policy and User Agreement for details.

Successfully reported this slideshow.

Like this presentation? Why not share!

- MIT Math Syllabus 10-3 Lesson 9: Ra... by Lawrence De Vera 2310 views
- Help with assignments extends algeb... by Mely Jess 21 views
- Ratio word problem creation template by PeiniLuvShow 258 views
- Ratios and proportions power point ... by Jermel Bell 4499 views
- 10 th math by Arvind Meena 13105 views
- GMAT Data Sufficiency : Word Problem by q51 1811 views

1,074 views

Published on

No Downloads

Total views

1,074

On SlideShare

0

From Embeds

0

Number of Embeds

9

Shares

0

Downloads

57

Comments

0

Likes

1

No embeds

No notes for slide

- 1. Ratios and Proportions
- 2. Definitions • A proportion is two ratios that are equivalent • A ratio is a comparison of two items • Equivalent means equal
- 3. How do you write equivalent ratios? 102 1 = 48 9 24 =
- 4. To check if 2 ratios are proportional…you can use cross products or cross multiplying 5 2 10 4 = Is 2 x 10 equal to 4 x 5? If yes, you have a proportion!
- 5. You try it! Is this a proportion? 8 6 12 9 =
- 6. You can also use “scale factor” to see if two ratios form a proportion 8 3 24 9 = x 3 = x 3 = Since 3 x 3 = 9 and 8 x 3 = 24, these ratios do form a proportion! 3 is called the “scale factor”.
- 7. You Try it! Is this a proportion? 10 7 15 14 =
- 8. You Try it! Is this a proportion? 5 12 15 36 =
- 9. Homework: P. 240 #1-9 all; 10-28 evens Copy the proportions and show your work.

No public clipboards found for this slide

×
### Save the most important slides with Clipping

Clipping is a handy way to collect and organize the most important slides from a presentation. You can keep your great finds in clipboards organized around topics.

Be the first to comment