Shapes
Categories
Ratios
Rates
Speed
What shape
is this?
What shape
is this?
All rectangles
All
squares are rectangles.
A square is a special
kind of rectangle.
All ratios
All
rates are ratios.
A rate is a special
kind of ratio.
A ratio is just a comparison of amounts.
For example: In Ms. Litton’s class, there are 15 girls to 16 boys. You can also write this in other ways:
>> What is the gender ratio in your class?
By the way, it is also correct to use a total in the comparison. For example: In Ms. Litton’s class there are 15 girls to 31 total students. It’s more like a simple fraction this way, but it’s still correct.
A rate is a special type of ratio that uses two different kinds of units together to give information.
When you use two totally different units. This is a rate.
You also use rates when you talk about speed.
Speed is always a rate:
