Ratios
Unit Rate
Distance, Speed and Time
Solving Proportions
Word Problems
100
Define "ratio"
A comparison between two numbers
100
A "unit rate" is a rate with this number in the denominator.
What is one?
100
What is the formula for speed?
Speed = distance/time
100
Solve for x.
x/6 = 6/9
4
100
Anna earns $12 in 3 hours. How much does she make in 5 hours?
What is $20
200
What are the 3 ways we write a ratio.
As a fraction, with a colon, and with the word "to"
200
If James types 120 words per 3 minutes, what is his rate of typing?
40 words per minute
200
Christmas Trivia: In Home Alone, where are the McCallisters going on vacation when they leave Kevin behind?
Paris
200
Solve for x.
x/2 = 9/6
3
200
Riley drank 8 ounces of water in the first two hours he was at school. If he keeps this pace, how many ounces of water will he drink in his eight hour school day?
32 ounces
300
General Trivia: Mr. James taught in which country before teaching in the Philippines?
Vietnam
I taught in Ho Chi Minh City from 2008-2009, at the American International School.
300
If 10 bags of Hot Cheetos cost $3.50, then how much does 1 bag cost?
$0.35
300
Speed = ?
Distance = 50 y
Time = 2 h
25 y/h
300
PCA Trivia: Which junior high teacher has four younger brothers?
Miss Scott
300
The length of the tunnel is 450 miles. If 1 inch represents 60 miles, how many inches would a drawing of the tunnel?
7.5 inches
400
10 and 45
400
If a car travels 735 miles on 15 gallons of gas. How many miles does it travel on one gallon?
49 miles
400
s = 50 mi/day
d = 400 miles
t = ?
80 days
400
Solve for x.
6/10 = 18/x
30
400
A 3 ounce bag of gummy bears contains 50 pieces. How many pieces would you expect to find in a 15 ounce bag?
250 pieces
500
Final Jeopardy Question:
Anna earns $12 in 3 hours. How much does she make in 5 hours?
$20.00
Solution: $12/3hours = $4 per 1 hour of work. So if she works for 5 hours, then she'll earn $4 x 5 hours = $20.00
500
Which is the better deal $20 for 4 t-shirts or $24 for 6 t-shirts?
$24 for 6 t-shirts is the better deal.
Solution:
$20/4 t-shirts = $5 per t-shirt
$24/6 t-shirts = $4 per t-shirt (So this is the better deal)
500
Jeff ran a 19.25-mile race in 3.5 hours. What was his average speed?
5.5 miles/hour
500
Solve for x.
3/8 = 15/x
40
500
Christmas Trivia: Which country started the tradition of putting up a Christmas tree? (Hint: it is located in central Europe)
Germany