r@t!os
TRUE OR FALSE
8 and 9 is a ratio
FALSE
5x = 20
5x/5 = 20/5
x = 4
What did we do to x?
Isolate
Percentages have a denominator of
100
YOU MAY USE A CALCULATOR
7 mangoes cost $5.98. What is the unit rate?
$0.85 each
CALCULATORS YES
Wyatt and Jake tip the waiter 17.5% of their $25.00 bill. How much did they tip the waiter?
$4.38
In simplest form, how would you write the following ratio in the 3 formats?
18 green M&Ms to 3 blue M&Ms
6 to 1
6 : 1
6 / 1
A ratio with a denominator of 1 is ...
A unit rate
90% is what as a fraction in its simplest form?
90/100 = 9/10
YOU CAN USE A CALCULATOR
A pack of 12 pencils cost $2.63. If you were to buy the pencils individually, how much would 17 cost?Unit Rate = $0.22
$3.74
YA CALCULATORS
Thomas and Nico got a 15% discount on a $502.41 TV. How much did they each pay if they split the discounted price?
$213.53 each
On a farm, there are 9 cows for every 2 horses. If there are 63 cows, how many horses would there be?
14 horses
3x + 9y = 36
3 and 9 are what?
Coefficients
3/25 as a percent is
12%
CALCULATORS = YES
Natalie was paid $98.42 for babysitting for 6 hours. Saniya was paid $109.55 for babysitting 6.5 hours. Who is being paid more PER HOUR?
Natalie: $16.40 per hour
Saniya: $16.85 per hour
SANIYA MAKES MORE PER HOUR
CALCULATORS = YEP
Joseph spent $63.86, the tax rate was 18.3%. How much did he actually spend?
$75.55
Ratio tables are what kind of ratio?
Equivalent
(0, 1) is an example of ...
An ordered pair
CALCULATORS OK
On a 30 point quiz, student A gets 26 questions correct. Student B gets a 83%. Who got the higher score?
Student A BECAUSE: 26/30 = 86.67%
Student B: 25/30 = 83.33%
YEP TO CALCULATORS
Garnet bought 2 shirts for $39.87 and Elizabeth bought 1 shirt for $19.83. Who got the better deal?Garnet: 39.87 / 2 = $19.99 per shirt
Elizabeth: $19.83 per shirt
ELIZABETH GOT THE BETTER DEAL
CALCULATORS OK
Ryan and Sam spend $103.42, they recieve a 6.25% discount AND tax rate is 19%. How much did they actually spend?
$115.38
103.42 x .0625 = 6.46 <- discount FIRST
96.96 x .19 = 18.42 <- tax on discounted price
96.96 + 18.42 = $115.38 <- total cost
Fill in the ratio table:
3 : 8
? : 24
15 : ?
3:8
9:24
15:40
9:12
18:24
27:36
9, 18, and 27
YES TO CALCULATORS
What percent is 9 of 58? *Round to the nearest hundredth*
15.52%
CALCULATORS OK
Izzy spent $92.41 on 2 pairs of shoes. Amber spent $120.30 on 3 pairs of shoes. Who spent more money per pair of shoes?
Izzy: 92.41 / 2 = $46.21 per pair
Amber: 120.30 / 3 = $40.10 per pair
IZZY SPENT MORE $ PER PAIR
YE CALCULATORS
Polly K. and Nicole spend $26.48 on food. They tip the waitress 19% and sales tax is 6.75%. How much do they each pay if they split it?
26.48 x .0675 = 1.79 <- sales tax FIRST
28.27 x .19 = 5.37 <- tip on price w/ tax
$33.64 total
SPLIT THE BILL! 33.64 / 2 = $16.82 EACH