Zari's CBSE Lesson

Zari's Ratio and Proportions Lesson

by Zari James

​Ratios & Proportions

​Ratios determine the relationship between two quantities.

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​Quantities: The amount of an object/material.

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​Proportions decide whether or not two ratios are equal to each other or not.

Ratios and proportions | Lesson (article) | Khan Academy

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Fill in the Blanks

If there is a total of 13 cookies in the basket, what is the ratio of red sprinkled cookies to blue sprinkled cookies?

Open Ended

1. How many pink rectangles are there to yellow rectangles?

2. How many orange squares are there to blue squares?

3. How many squares are there to rectangles?

Multiple Choice

What is the proper representation for ratios?

• a-b

  or

  a>b

• a:b

  or

  a/b

• a~b

  or

  a!b

• a;b

  or

  a/b