Algebra
If 2x = 14, what is the value of x?
x = 7
List all factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
How many lines of reflective symmetry does an equilateral triangle have?
3
A card is picked from 1 to 10. What is the probability of getting an even number?
5/10 = 1/2
Data: 2, 2, 3, 5, 7, 7, 7, 8, 8. Find the mode
7
Simplify: 5(x - 2) + 3x
8x - 10
Order these numbers from smallest to largest:
3/4, 0.6, 2/3
0.6, 2/3, 3/4
A circle has radius 7 cm. Calculate the area.
Use π = 22/7
154 cm2
A coin and a die are tossed. How many total outcomes are there?
2 x 6 = 12 outcomes
Find the mean of: 4, 10, 11, 12, 13
10
Factor the expression: x2 + 2x - 15
(x + 5) & (x - 3)
Calculate 25% of 240, then add 10% of 80.
60 + 8 = 68
A quadrilateral has 3 angles: 90°, 85°, and 95°. Find the fourth angle.
90°
In a bag: 4 red, 3 yellow, and 5 blue balls. What is the probability of picking yellow?
3/12 = 1/4
What is the range of: 5, 9, 12, 14, 15?
10
The pattern is: 3, 7, 11, 15, ... Find the formula for the nth term.
Tn = 4n - 1
Two numbers are in the ratio 4:7 and their total is 88. What are the numbers?
The numbers are 32 & 56
A right triangle has a base of 5 cm and a height of 12 cm. How long is the other side?
13 cm (using Phytagoras)
In a deck of poker cards, what is the chance of drawing an Ace?
4/52 = 1/13
What are the steps in determining the median of data?
Sort all data, then take the data in the middle position
If x + y = 10 and 2x - y = 5, find the values of x and y.
x = 5, y = 5
The product of three consecutive even numbers is 384. Find the numbers.
The numbers are 127, 128, 129
Point A is at (2, 3). After moving 3 units right and 2 down, what are the new coordinates?
(5, 1)
Two dice are rolled. What is the probability that the total is 9?
4/36 = 1/9
After the test, the average score of the 4 students is 80. If one student retakes the test and gets a score of 75, then the average changes to ....
79