How do you read the following ratio? 7:4
Seven to four, or seven per four
A store sells 3 T-shirts for $15. What is the unit rate, or price per shirt?
Possible answers:
$15 per shirt, $15:1 shirt, $15/shirt
Ms. T has 5 dogs. 3 of them have brown fur and the rest have white fur. What is the ratio of brown dogs to white dogs?
Possible answers:
3 brown dogs per 2 white dogs, 3:2, 3/2
What is the function of a ratio? Or when do we use ratios?
Hint: What is the definition of a ratio?
to compare two things
What is the ratio of boys to the total number of students in the room right now?
*observe
Draw the ratio of circles to squares is 3:1
*observe three circles and one square
Give an example of the three ways to write a ratio.
Example: 1/2 1:2 1 to 2
Ms. T spends $30 every 6 months on pencils.
How much does she spend every month?
How about every 9 months?
Every month: $5
Every 9 months: $45