Ratios continued
This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

Ratios Continued PowerPoint PPT Presentation


  • 63 Views
  • Uploaded on
  • Presentation posted in: General

Ratios Continued. What is the ratio of buttons to paper clips? This means that there are 6 buttons and 4 paper clips. But is there another way to compare the numbers of buttons and paper clips?.

Download Presentation

Ratios Continued

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Ratios continued

Ratios Continued


Ratios continued

  • What is the ratio of buttons to paper clips?

  • This means that there are 6 buttons and 4 paper clips.

  • But is there another way to compare the numbers of buttons and paper clips?


Ratios continued

  • By dividing the objects into two equal groups, we see that every time there are 3 buttons, there are 2 paper clips.

  • Therefore, another way to write the ratio of buttons to paper clips would be


Ratios continued

  • What if we doubled the amount of each object?

  • Now there are 12 buttons and 8 paper clips. Would the ratio be equivalent to the ratio ?


Ratios continued

  • Yes, whenever there are 6 buttons there are 4 paper clips. So is equivalent to


Ratios continued

  • We have shown that , , and are all equivalent ratios.

  • What do they have in common?


Ratios continued

  • Just like with fractions, we are allowed to multiply or divide both parts by the same number.

  • How can ratios be changed?

  • There are 18 bats and 15 frogs. What is the ratio of bats to frogs?


Ratios continued

  • There are 10 bottles and 5 cans. Write the ratio of cans to bottles in 3 different ways.

    (Don’t write the same ratio in 3 forms, write different ratios with different numbers)


Ratios continued

  • Out of 100.

  • Find an equivalent fraction with a denominator of 100. The numerator will be the percent.

  • What does percent mean?

  • What is 87% as a fraction?

  • How can we easily turn some fractions into percents?


Ratios continued

  • 56%

  • Convert into percent


Ratios continued

  • 42%

  • 30%

  • 60%

  • Convert into percent

  • Convert into percent

  • Convert into percent


Direct station

Direct Station

  • We will do ratio and percent word problems.


Collaborative station

Collaborative Station

  • We will be playing a ratio version of I Spy.

  • There will be a picture with many different objects in it.

  • Partner A picks two objects and says their ratio. “I spy two objects with a ratio of 2 to 1.”

  • Partner B (and C) try to guess what two objects Partner A was thinking of.

  • Once the objects are correctly guessed, write down the ratio on your work paper and have the next person pick two objects.


Collaborative station example

Collaborative Station Example

  • Partner A: “I spy two objects with a ratio of 3 to 1.”

  • Partner B: “Is it the ratio of candles to snowmen?”

  • Partner A: “No, even though that ratio is also 3 to 1, I was thinking of different objects.”

  • Partner B: “Is it the ratio of gingerbread men to snowmen?”

  • Partner A: “Yes!”

  • Everyone writes down “The ratio of gingerbread men to snowmen is 3 to 1.” on their papers.

  • Now it’s Partner B’s turn to pick.


Independent station

Independent Station

  • We will now switch to ST Math’s unit on Ratios


  • Login