Ratios
comparing two things
What is an equivalent ratio
A ratio where both sides can be multiplied or divided equally on both sides.
When is a time when I would need to compare two ratios?
when determine if something is cheaper, tastes, different etc.
What is the formula for determine unit rate?
Y/X
100
A ratio can be comparing two types of things. Part to ? or Part to ?
Part to Part or Part to Whole
List 3 equivalent ratios to 1:4
Team A mixes 3 scoops of powder with 4 cups of water to make a sports drink.
Team B mixes 6 scoops of powder with 10 cups of water.
Which team’s drink is stronger (has more powder per cup of water)?
Team B
A school fundraiser raised $180 in 6 hours.
What was the rate of money raised per hour?
$30 per hour
What are two different ways to say 50%
half or .5
3 lemons 5 apples
3:5
When is a time outside of school when I would need to increase or decrease a ratio equivalently? Give me two examples
Baking, wood work, scientist, etc.
Paint Mixture X uses 2 cups of blue paint for every 5 cups of yellow paint.
Paint Mixture Y uses 4 cups of blue paint for every 8 cups of yellow paint.
Do the two mixtures create the same shade of green, or is one more blue than the other?
Mixture 7 is more Blue
What does MPH stand for and how does that relate to rate?
Miles per hour. it's the rate you are going per hour.
.25 as a percent
25%
I went shopping and I saw 18 women shopping by themselves and 12 men shopping by themselves. What are the two ratios you can make with this story?
18 women: 12 men
18 women: 30 people
What number can I use to simplify this ratio? and what is the simplest form of this ratio? 3:15
3 1:5
Trail Mix A has 7 chocolate pieces for every 3 pretzels.
Trail Mix B has 14 chocolate pieces for every 8 pretzels.
Which trail mix has a higher ratio of chocolate to pretzels?
Trail Mix B has more chocolate
A printer uses 3/4 of a cartridge to print 120 flyers.
What is the rate of flyers printed per cartridge?
1 cartridge per 160 flyers.
what percent is 13 out of 20?
65%
5 cats to 14 animals
A recipe uses 4 cups of flour for every 6 cups of sugar.
If the baker triples the recipe, they will use 12 cups of flour and 18 cups of sugar.
Are the ratios 4:64 and 12:18 equivalent?
12:18
Snack Pack A has 5 granola bars for every 2 juice boxes.
Snack Pack B has 12 granola bars for every 5 juice boxes.
Which snack pack has more granola bars per juice box?
Snack Pack B
A school cafeteria uses 9 pounds of rice to make 24 servings of fried rice.
What is the rate of rice used per serving (in pounds per serving)?
How many pounds of rice are needed to make 40 servings?
3/8 pounds per serving, 15 pounds for 40 servings.
18 is what percent of 15?
120%