Vocabulary
The relationship in quantity or degree between two things
a) rate
b) ratio
c) proportion
d) unit rate
RATIO
Ansley drove 520 miles in 8 hours. Taylor drove 210 miles in 3 hours. Who drove at a faster speed? How do you know?
Taylor
A ratio that compare a number to 100
PERCENT
A circus elephant is going to stand on a ball. Lulu the Elephant weighs 2 Tons. The ball can hold up to 3,000 lbs. Can Lulu use this ball?
YES
There were 24 teams at a soccer tournament. In all, 12 teams wore red shirts, 6 teams wore blue shirts, 4 teams wore orange shirts, and 2 teams wore white shirts.
What is the ratio of blue to orange and red?
6:16 OR 3:8
A ratio that compares two quantities measured in different units.
a) unit ratio
b) unit rate
c) rate
d) proportion
Crain says the ratio of letters in “East” to “Cobb” is 4:4. Hailey says that ratio is 1:1. Who is correct? Explain your answer.
BOTH
4/4 = 1/1
A value that does not change
CONSTANT
The umber of balloons purchased in each color at Party City are:
Red 10
Yellow 20
Blue 15
Green
25
Which two items does the ratio 3/2 represent?
BLUE to RED
At a pond there were 5 ducklings for every 1 adult duck. If there were 78 total birds in the pond, how many were adults'?
13
Rate in which the second quantity (denominator) is one unit.
UNIT RATE
Carly, Ryan and Zack share some money in the ratio 5:3:1. If Ryan's share is $105, how much do they share in total?
$315
A constant ratio of two variables related proportionally represented by the variable k.
CONSTANT OF PROPORTIONALITY
In a recent year, Joey Chestnut won a hot dog eating contest by eating nearly 66 hot dogs in 12 minutes. If he ate at a constant rate, determine about how many hot dogs he ate every 7.5 minutes.
38.5
Of a squirrel's hidden acorns, for every 5 that get found, there are 3 that do not get found. A squirrel hid 40 acorns altogether.
How many of the acorns do not get found?
15
Statement that two rates or ratios are equivalent.
PROPORTION
What is the ratio of vowels to consonants: East Cobb Middle School”
7:13
A relationship between two quantities in which the rate of change is constant, or the ratio of one quantity to the other is constant (can be described with the equation y=kx)
PROPORTIONAL RELATIONSHIP
Chocolate Cake: 1452 calories in a 12- slice cake
Apple Pie: 880 calories in an 8 -slice pie
Which dessert has more calories per slice?
Chocolate cake
In a bag of trail mix, there are 11 fruits for every 7 chocolates. If there are a total of 54 pieces in the bag, how many are chocolate and how many are fruit?
33 fruit
21 chocolate