Intro to Ratios
What'cha Know About Ratios?
To Be Equivalent or Not to Be, That is the Question!
Unit means 1
Real World
Ratio Problems
Ratio Problems
100
Write a ratio of yellow to red circles:
3:4
100
A ratio is a ___________ between two quantities.
Comparison
100
Are the Ratios Equivalent?
2:4 = 8:12
No!
100
Write the unit rate for the given scenario:
$44 in 4 days
What is $11 for 1 day?
100
The ratio of tomatoes to red apples is 2:5. If there are 20 tomatoes, how many red apples are there?
50 apples
200
Write a ratio of yellow to red circles:
5:3
200
Write 11 limes to 6 lemons as a ratio in 3 ways.
11:6, 11/6, 11 to 6
200
Are the Ratios Equivalent?
5:10 = 30:60
YES!
5:10 (multiply by 6) = 30:60
200
Write the unit rate for the following scenario:
1400 words for every 4 pages
What is 350 words for 1 page?
200
The ratio of 6th grade scholars to teachers is 24:1,
If there are 192 6th grade scholars, how many teachers are there?
What are 8 teachers?
300
Write a ratio of red to blue circles:
5:6
300
Ratios can ONLY be written as fractions. True or False?
False: Ratios can be written 3 different ways.
300
Are the Ratios Equivalent?
1:2 = 16:18
No!
300
Write a unit rate for the given scenario. $11.70 for 9 bananas.
$1.30 for 1 banana
300
12 students play on the school's basketball team and 36 students play on the football team. What is the ratio of football players to total athletes in simplified form?
What is 3:4?
400
Use ratio language to describe the relationship between the red squares and green diamonds.
For every 3 red squares, there are 8 green diamonds.
400
There are 2 pineapples and 7 bananas. What is the ratio of bananas to total fruit?
7:9
400
What value of x will make an equivalent ratio?
3:9 = 9: x
x = 27
3:9 (multiply by 3) = 9:27
400
Write the unit rate for the given scenario:
An 8-pack of gel pens costs $11.44
What is $1.43 for 1 gel pen?
400
The ratio of blueberries to strawberries is 1:7. If there are 12 more strawberries than there are blueberries, how many blueberries are there?
14 Blueberries
500
!!!!DAILY DOUBLE!!!!
What is the ratio of pink circles to blue squares?
0:2
500
!!!!DAILY DOUBLE!!!!
What are the three types of ratios?
HINT: ASSOCIATED RATIOS
Part-to-Whole, Whole-to-Part, and Part-to-Part
500
!!!!DAILY DOUBLE!!!!
What value of x will make an equivalent ratio?
x:30 = 21: 90
x = 7
x:30 (multiply by 3) = 21: 90
500
!!!!DAILY DOUBLE!!!!
Which is the better buy per pound:
3lbs of potatoes for $2.46
OR
6lbs of potatoes for $4.62
EXPLAIN!
What is 6lbs of potatoes?
3lbs of potatoes for $2.46 = $0.82 for 1lb
6lbs of potatoes for $4.62 = $0.77 for 1lb (CHEAPER)
500
!!!!DAILY DOUBLE!!!!
Andy drove 840 miles in 12 hours. How far could he drive in 3 hours?
What is 210 miles?