Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Ratios
is a comparison of two numbers. Can be written as a fraction, with a colon or the word “to”
Example: 2⁄3, 2:3, 2 to 3
5 : 6
both 5 and 6 are terms
Each number in a ratio is called a term
Sarah has 3 cats and 1 dog. A ratio would be 3 to 1 for cats or 1 to 3 for dogs.
When ratios are equal they are called proportional
When a ratio has term that is 1 it is called unit rate
A ratio can compare a part to a part, a whole to part or part to a whole. A part to whole ratio is called a fraction
When given a ratio and trying to determine the unit rate you can divide one term into the other. Then place the answer over 1 which would be your unit rate
10 cookies to 5 kids
place the 2 over 1
My unit rate is 2 cookies for 1 kid
You can determine if the ratios are proportional by cross multiplying them and comparing the products
2 x 9 and 3 x 6
2x9=18 and 3x6=18
These two ratios are proportional
Name a term in the following ratio
If the ratio was 6 green pencils to 2 blue pencils what would be the unit rate for green pencils?
Would a ratio of 4 green pencils and 3 blue be proportional? Why or Why not?
A term would be 6 or 2
We would divide 6 by 2 and get 3 so our unit rate would be 3 green pencils for every 1 blue pencil
If we cross multiply (6x3=18) and (2x4=8) we would discover that the products are not equal therefore the two ratios are not proportional