Ratios
What are the 3 ways we write a ratio.
What is
As a fraction, with a colon, and with the word "to"
If Mimi drives 50 miles in 2 hours, what is her unit rate (miles per hour)?
What is 25 miles per hour
Do 2/3 and 4/6 form a proportional relationship?
What is
Yes, proportional, 2 x 2 = 4, 3 x 2 = 6
**Double Jeopardy** Solve for x. x/6 = 6/9
What is 4
Anna earns $12 in 3 hours.
What is the unit rate? ($ per hour)
How much does she make in 5 hours?
What is $4 per hour...$20
Write 10 limes to 6 lemons as a ratio in 3 ways.
What is 10:6, 10/6, 10 to 6
_________ _________ is the value that represent "per one"
What is UNIT RATE
**DOUBLE JEOPARDY** Are 1/6 and 2/7 proportional?
What is
Not Proportional, 1 x 2 = 2 and 6 x 2 = 12
Solve for x. x/2 = 9/6
What is 3
Ramon gets 10 points in 4 games.
What is the unit rate? (points per game)
How many does he get in 6 games?
What is 2.5 points per game... 15 points
**DOUBLE JEOPARDY**
Write 6 girls to 8 boys as a ratio in 3 ways...
in SIMPLEST form
What is
3/4 3:4 3 to 4
If 10 bags of Hot Cheetos cost $3.50, then how much does 1 bag cost?
What is $0.35
Are 6/8 and 9/12 proportional?
What is
Yes, b/c the cross products are: 6 x 12 = 72,
and 9 x 8 = 72 (They also both simplify to 3/4)
Solve for x. x/6 = 8/12
What is 4
Henry reads 8 pages in 6 minutes,
What is the unit rate? (pages per minute)
How many pages can he read in 20 minutes?
What is 1 1/3 pages per minute...26 2/3 pages
Ratios are _________ ___________ so the numbers that are being represented should be written the same way as you "say".
What is a ORDER SPECIFIC
**DOUBLE JEOPARDY** Which is the better deal $20 for 5 t-shirts or $24 for 8 t-shirts
What is $24 for 8 t-shirts (unit rate is $3 per shirt)
Are 5/10 and 4/8 proportional?
What is
Yes, b/c they both equal 1/2 or 5 x 8 = 40,
and 10 x 4 = 40
Solve for x. 6/10 = 18/x
What is 30
Julia texts 60 words in 4 minutes,
What is the unit rate? (words per minute)
How many words could she text in 15 minutes ?
What is 15 words per minute.....225 words
What are 2 methods to write an equivalent ratio?
A. Adding B. Subtracting
C. Multiplying D. Dividing
What is C, D Multiplying and Dividing
If a recipe call for 3/4 cup flour to 2 eggs, how many cups of flour are needed for 1 egg?
What is 3/8 cup
Are 3/10 and 12/20 proportional?
What is
Not proportional b/c 3 x 4 = 12 and 10 x 4 = 40
Solve for x. 3/8 = 15/x
What is 40.
**DOUBLE JEOPARDY**
The taxi charged $10 for 13 miles
What is the unit rate? (miles per $)
How much will 39 miles cost?
What is 1.3 miles per $....$30