Rates & Ratios
Solving Proportions
Percents
Simple Probability
Compound Events
100
The unit rate corresponding to $57 for 6 hours
What is $9.50/hr?
100
(x+3)/4 = 7/8
What is
x = 0.5?
100
18 is this percent of 90
What is 20%?
100
This is
P(red)
What is
1/8?
100
You roll a number cube twice. This is the probability that you roll a 2 or 3 followed by an odd number.
What is
1/6?
200
1 mi in 3 min expressed as miles per hour
What is 20 mi/h?
200
(k+5)/10=(k-12)/9
What is
k=165?
200
1.8 is 2% of this number
What is 90?
200
The probability that you will be picked for a school committee is 20%. This is the probability that you will not be picked.
What is 80%?
200
You choose a tile from a bag containing 2 A's, 3 B's, and 4 C's. This is P(B and B) with replacement.
What is
1/9?
300
4 cents per day expressed as dollars per year
What is $14.60/yr?
300
The value of a in the figure.
What is 5.6?
300
A discount from $4.95 to $3.87 is this percent of change.
What is a 22% decrease?
300
A forest contains 300 trees. You randomly pick 67 trees and find that 27 of them are oaks. This is the experimental probability that a tree in the forest is an oak.
What is 40?
300
Four girls and three boys volunteer to represent their class at an event. The teacher selects one name and then another from a bag containing all of the students' names. This is the probability that both representatives will be girls.
What is
2/7?
400
21,120 ft in 4 hours expressed as miles per hour
What is 1 mi/h?
400
The scale of a map is 1 in:17.5 mi. This is the actual distance corresponding to 5 in.
What is 87.5 mi?
400
You guess that the height of the ceiling in your living room is 15 ft., but it is 18 ft. This is your percent error.
What is 16.7% error?
400
This is the probability that the spinner lands on an even or blue section.
What is
5/8?
400
A two-digit number is formed by randomly selecting from the digits 1, 2, 3, and 5 without replacement. This is the probability that the two-digit number contains a 2 or a 5.
What is
5/6?
500
It takes you 21 min to go 5 mi. It will take you this long to go 12 mi at the same rate.
What is 50.4 min?
500
A 3.5-ft child casts a 60 in. shadow. She is standing next to a telephone pole that casts a 50-ft shadow. This is the height of the telephone pole.
What is 35 ft.?
500
An item costs $64. The price is increase by 10%, then reduced by 10%. This is the final price.
What is $63.36?
500
90 out of 150 respondents to a school survey said that they wanted to go to a 4-year college right after high school. This is how many students you would expect to respond the same way in the entire 2000-student high school.
What is 1200 students?
500
You select 2 two-digit numbers at random from 10 to 30 (including 10 and 30). This is the probability that the first number is a multiple of 6, and the second is even, with replacement.
What is
44/441?