Number Sense
Mr. Adams had 24 guests at his house for a party. Each guest brought one item.
- One-third of the guests brought drinks.
- One-fourth of the guests brought a dessert.
- The rest of the guests brought chips.
How many guests brought chips?
10 guests brought chips
Based on the information below, write an equation that could be used to calculate the cost, c, of any number of pencils, p?
- 4 pencils for $0.72
- 7 pencils for $1.26
- 12 pencils for $2.16
c = 0.18p
Which of the following values is not a solution of x - 4 < 15 ?
0, 19, 18.9, 15 1/4
15 1/4
The seventh grade is having an ice-cream sundae party. The menu for the party is listed here.
- vanilla or chocolate ice cream.
- sprinkles, chocolate chips, or cherries
- hot fudge or strawberry syrup
Each student must choose one flavor of ice cream, one topping, and one flavor of syrup. What is the total number of possible ice-cream sundaes?
12
Hillary and Devin will collect data t find out where the seventh-grade students should take their field trip. Which group should Hillary and Devin survey to collect the best data?
A. The first 25 students through the lunch line
B. Ten random people from each seventh-grade class
C. All the students in a dance class
D. Twenty of their friends
B. Ten random people from each seventh-grade class
Michelle has 4 hours of free time after school. Yesterday, she spent 1/6 of the time on the computer, 15% of the time on the phone, 1/8 of the time watching TV, and 20% of the time doing chores. She played basketball for the remainder of the time. How many minutes did she play basketball?
86 minutes
Suppose a butterfly can fly 82 feet in 4 seconds. A dragonfly can fly 50 feet in 2 seconds. Which can fly faster and by how much?
The dragonfly by 4.5 feet per second faster.
What is the solution of the inequality -3x - 42 > 3 ?
A. x > -13
B. x < -13
C. x > -15
D. x < -15
D. x < -15
Milani rolls a number cube and flips a fair coin. What is the probability of the number cube landing on a number greater than 3 and the coin landing on heads?
1/4
A teacher randomly surveys 60 students in the seventh-grade class and finds that 40% participate in only a sport, 30% participate in only a club, and 30% participate in both a sport and a club. In this study, what are the sample and population?
A. The sample is the 60 students surveyed, and the population is all students who participate in sports.
B. The sample is the 60 students surveyed and the population is the entire seventh-grade class.
C. The sample is the entire seventh-grade class, and the population is all students who participate in both sports and a club.
D. The sample is the entire seventh-grade class, and the population is the 60 students surveyed.
B.The sample is the 60 students surveyed, and the population is the entire seventh-grade class.
Cole made some ornaments.
- He sold 7/8 of the ornaments he made.
- He gave 10% of the ornaments to a charity.
- He kept the remaining 8 ornaments to give as presents.
How many total ornaments did he make?
320 ornaments
Charles built a scale model of a statue. He built the model 7 inches tall to represent the actual height of 15 feet. Which equation below represents the relationship between the actual height (a), in feet, and the height of the model (m), in inches?
A. a = 7/15 m
B. m = 7/15 a
C. a = 0.75m
D. m = 0.75a
A. a = 7/15 m
Which expression is equivalent to -4(x + 2) - 1/2(2x - 6) ?
A. -5x - 4
B. -5x - 5
C. -8x - 4
D. -8x - 5
B. -5x - 5
There are 6 red bookmarks, 7 blue bookmarks, 8 orange bookmarks, and 16 yellow bookmarks in a bag. Jesus randomly chooses a bookmark. What is the probability that he will choose a color other than yellow?
21/37
The table shows two sets of data.
Set 1: 2, 3, 6, 8, 11, 12
Set 2: 0, 4, 4, 4, 12, 18
How do the means for each set of data compare?
A. The mean of Set 1 is the same as the mean of Set 2.
B. The mean of Set 2 is 3 greater than the mean of Set 1.
C. The mean of Set 2 is 8 greater than the mean of Set 1.
D. The mean of Set 1 is 8 greater than the mean of Set 2.
A. The mean of Set 1 is the same as the mean of Set 2.
A kitchen is shaped like a rectangle with dimensions of 11.5 ft by 9.5 ft. The floor of the room is made of square tiles with the side length of 0.5 ft. What is the number of tiles that will cover the kitchen floor?
437 tiles
Bella makes pies. To make 6 pies, she uses 7.5 cups of flour. How many cups of flour are needed to make 1 pie?
1.25 cups of flour or 1 1/4 cups of flour
What is the value of a when (a - 1) / 4 = 2.25 ?
a = 10
Snyder has 48 marbles in a bag.
- The marbles are green, yellow, red, and blue.
- The chance of picking a green marble is 1 in 4.
- The chance of picking a yellow marble is 1 in 12.
- The chance of picking a red marble is 1 in 6.
What is the probability of picking a blue marble?
1/2
The table shows the quiz grades for students in two biology classes.
Class 1 : 98, 94, 65, 76, 84, 94, 90, 84, 76, 67
Class 2 : 45, 96, 96, 84, 85, 87, 64, 77, 96, 90
Which statement is true?
A. Class 1 has a larger mean and median than class 2.
B. Class 1 has a smaller mean and median than class 2.
C. Class 1 has a smaller mean than class 2 but a larger median.
D. Class 1 has a larger mean than class 2 but a smaller median.
D. Class 1 has a larger mean than class 2 but a small median
What is the value of -2(42 + (1/2)2)?
-32 1/2 or -32.5
A worm moves 1/8 of a foot in 1/10 of an hour. At this rate, how many feet will the worm move in 4 hours.
1 1/4 ft. or 1.25 ft.
What is the value of y when 16 = 4(y + 3) - 8y
y = -1
Nicole conducted a probability simulation.
She wrote the letters A, D, D, I ,T, I, O, and N on separate sheets of paper and placed them in a box. She then randomly selected a letter out of the box 50 times with replacement and recorded the results shown below.
A - 4 times
D - 13 times
I - 14 times
T - 7 times
O - 5 times
N - 7 times
Nicole will select letter an additional 550 times with replacement. Based on the results above, how many times should she expect to select a D?
She should expect to select the letter D 143 times