Rational Numbers
7.08 + 2.51 + (-3.84) =
5.75
A bag has 4 green marbles, 4 yellow marbles, 1 purple marble, and 3 pink marbles. What is the probability of selecting a pink marble at random? Express your answer as a percent.
25%
What is the value of p that makes the expressions equivalent?
3(4 + n) = 3(n + p)
4
Six movie tickets cost $85.50. At this rate, how much is one movie ticket?
$14.25
The profit a hot dog vendor earned is proportional to the number of hot dogs sold. The equation p = 1.5h represents the profit earned, p, and the number of hot dogs sold, h. How much profit does the vendor earn by selling one hot dog?
$1.50
2.68(20) + 4 + 3(-5) =
42.6
A bag has 4 green marbles, 4 yellow marbles, 1 purple marble, and 3 pink marbles. What is the probability of selecting a yellow marble at random? Express your answer as a percent.
33.3% or 33 1/3%
Simplify the expression:
(-2x + 8.1y) - (-9x + 5.3y)
7x + 2.8y
An event sells tickets for the following prices:
1 ticket = $55
2 tickets = $110
5 tickets = $250
Are the ticket prices proportional?
No
Katie buys a necklace for $25, plus 9% sales tax. What is her total?
$27.25
4(-7.6) + 3.5(100 + 5) =
337.1
Mike's scores on his science quizzes are as follows (all scores are out of 50 points): 48, 45, 43, 38. What is the mean and median of his scores?
Mean = 43.5
Median = 44
Solve:
-2x - 3 > -11
x < 4
Ari uses 1 1/4 cups of pretzels for every 1/2 cup of chocolate chips in his snack mix. How many cups of chocolate chips should he use if he only uses one cup of pretzels?
2/5 of a cup of chocolate chips.
Sally drank 15 ounces of her 24 ounce gatorade. What percent of her gatorade is remaining?
37.5%
5(-3/5) + 2(1.5) =
0
A spinner with two equal portions, red and green, is spun 2 times. What is the probability of the spinner landing on red both times?
1/4 or 0.25 or 25%
John has saved $50 and earns $7.50 per hour at his job. If he plans to buy a plane ticket to Arizona for $300, what is the minimum number of hours he must work to be able to buy the plane ticket?
34 hours
Three bags of flour and two bags of sugar weigh 32 pounds. Four bags of flour weigh 32 pounds. What is the ratio of the weight of a bag of flour to the weight of a bag of sugar?
2:1
A circle has a circumference of 31.4 inches. What is the area?
78.5 inches2
4 2/3 - 1 3/4 + 33 + 6(42) =
125 11/12
Martin has a 6 sided cube with colored faces. He rolls it 240 times and it lands on blue 118 times, on green 35 times, and on red 87 times. What is the most likely number of sides of Martin's cube that are blue?
3 sides
A group of 8 friends buys 1 ticket and 1 small popcorn at the movie theater. Each ticket costs $7.50 and they spend a total of $83.60. What is the cost of a small bag of popcorn?
$2.95
A proportional graph has coordinate points at (1, 1/4), (2, 1/2), and (4, 1). What is the equation used to represent this graph?
y = 1/4x
Bob has a rectangular patio with dimensions 20 feet by 40 feet. He is going to expand his patio by increasing both dimensions by 25%. What is the area of the expanded patio?
1,250 square feet