ratios and rates
solving proportions
cross products
scale drawings
probability
The Counting Principle
100
the equivalent rate:
5cm/1min = x cm/1 hr
What is 300
100
b/5 = 28/35
What is 4
100
you paid $5 at a gas station for 3 gallons of gasoline. how much would 12 gallons cost?
What is $20
100
A map has a scale of 1 inch : 25miles what is the actual distance of the given inches?
2 inches
What is 50 miles
100
Suppose you have a number cube...what is the probability of the following event?
a multiple of 3
What is 1/3
100
You roll a blue and a red dice. Used the counting principle to find the # of different outcomes that are possible.
6x6=36
200
equivalent rate:
5m/1 sec= x m/1 hr
What is 18,000
200
y/4 = 42/28
What is 6
200
You paid $5 at a gas station for 3 gallons of gasoline. How much gasnline can you buy for $30?
What is 18 gal
200
A map has a scale of 1 inch : 25miles what is the actual distance of the given inches?
5 inches
What is 125 miles
200
Suppose you have a number cube...what is the probability of the following event?
a factor of six
What is 2/3
200
You flip a coin 3 times. What is the probability that all 3 coins show heads or all 3 coins show tails?
P(HHH or TTT)=2/8=1/4
300
the equivalent rate of
3lb/ $1 = x oz/$1
What is 48
300
a/32 = 9/16
What is 18
300
you travel 24 miles in 2 hours while biking. At this rate, how far can you bike in 5 hours?
What is 60 miles
300
A map has a scale of 1 inch : 25miles what is the actual distance of the given inches?
0.5inches
What is 12.5 miles
300
An identification system assigns each item a code using 3 capital letters. How many different codes are possible?
What is 17,576
300
You spin spinner A two times. Find the probability that the spinner stops on 1, then 2.
P(1 then 2) =
1/2
400
the unit rate:
$161/ 7 shares = x $ / 1 share
What is $23
400
17/26 = w/52
What is 34
400
you travel 24 miles in 2 hours while biking. At this rate, how long will it take to bike 30 miles?
What is 2 hrs 30 min
400
A map has a scale of 1 inch : 25miles what is the actual distance of the given inches?
6.5 inches
What is
162.5 miles
400
a bag holds 8 slips of paper numbered 1 through 8. You randomly choose one slip of paper. "What is the probability that the number on the slip of paper is greater than 5?
What is 3/8
400
Each letter in the word CRAFT is written on a separate sheet of paper and is placed in a hat. A letter is chosen at random from the hat. Without replacing the letter, another letter is chosen from the hat. What are the odds in favor of choosing T first and C second?
P(T then C) =
1/5 * 1/4=1/2
500
Find the equivalent rate:
390m /1min= x m/ 1 hour
What is 23,400
500
39/54 = d/18
What is 13
500
Human hair grows about 0.7 centimeters in 2 weeks. How long does hair to grow 14 centimeters?
What is 40weeks
500
You are building a model of the Viper roller coaster in Ca using a scale of 1:47. The model is 4 feet high. How many feet high is the Viper?
What is 188ft
500
In the NBA there are 15 teams in the Eastern conference and 14 teams in the Westerns conference. One team from each conference advances to the finals. How many different match ups can there be in the finals?
What is 210 match ups.
500
Your roll 2 dice, what is the probability that the product of the numbers is 24?
P(Product = 24)=
2/36=1/1