This mathematical statement always has an equal sign
What is an equation?
100
This is the simplified expression for the perimeter of a book whose length is (b + 2) and width is b. (1 minute)
What is 4b + 4?
100
A bicycle store sells 3/7 of the mountain bikes in the store. Then only 24 mountain bikes are left. How many mountain bikes were there originally? (1 minute)
42 bikes
100
Find the mean of these numbers: 10.09, 10.14, 10.29, 10.07, and 9.99.
10.116
100
Find the median of this dot plot. (pg 280 #3)
27.5
200
This value is the one that occurs most often in a set of data
What is the mode?
200
There are 18 boys in a class. There are w fewer boys than girls. How many students are in the class? (1 minute)
What is w + 36?
200
Mabel has a total of 72 decorative beads. Some are red and some are yellow. The ratio of the number of yellow beads to red beads is 7:2. How many more yellow beads are there than red beads? (2 minutes)
40 more yellow
200
The mean of five numbers 3, 7, 9, 12, and x is 8. Find the value of x.
9
200
Find the mode of this dot plot (pg 305 #3)
1
300
These are the numerical descriptions of the middle of a set of data
What are measures of central tendency?
300
Anne is currently h years old. Bill is currently 2h years old, and Charles is currently 8 years old. Find an expression for each person's age after h years (2 minutes)
Anne 2h
Bill 3h
Charles 8 + h
6h + 8
300
Gary has a collection of comic books. After selling 80% of his comic books, he has 42 comic books left. How many comic books did he start with? (2 minutes)
210 comic books
300
In a race, the mean time for three runners was 12.4 seconds and the mean time for another six runners was 11.15 seconds. Calculate the mean time for all 9 runners.
11.8 seconds
300
Find the median of these prices: $150, $129, $79, $145, $136, $140, $130 (1 minute)
$136
400
These are the two measures of central tendency
What are mean and median?
400
A rectangle has a length of (2m + 1) and a width of (10 - m). Find the perimeter. (2 minutes)
What is (2m + 22)
400
In a competition, each school is allowed to send a team with at least 5 members, but not more than 8 members. 15 schools participated in the competition. Find the least number and greatest number of participants in the competition. (2 minutes)
least = 75
greatest = 120
400
The mean of six numbers is 47. Four of the numbers are 42, 40, 48, and 52. If the remaining numbers are in the ratio 2:3, find the two numbers. (2 minutes)
40 and 60
400
Find the mode of this graph (pg 280 #1)
40-49
500
This graph usually groups data into intervals and then represents the data as a bar graph
What is a histogram?
500
Brian bought x apples and some oranges. He bought 3 more oranges than apples. If apples cost $0.40 each and oranges cost $0.50 each, find the total amount of money that Brian spent on the fruit, in terms of x.
0.90x + 1.50
500
Mr. Edwards is now 3 times as old as his daughter. In 20 years' time, the sum of their ages will be 84. Find their ages. (2 minutes)
11 and 33
500
A data set consists of three numbers, a, b, and c. Write an algebraic expression to represent the mean of the new set of numbers obtained by halving every number in the set. (2 minutes)
(a + b + c)/6
500
Find the mean of this data (pg 280 #3) (3 minutes)