Number
Find the LCM and HCF of 18 and 24.
The LCM is 72
The HCF is 6
If x + 2 = 3x - 4, what is the value of x?
x = 3
An obtuse angle measures between ... degrees?
90 to 180
A die is rolled. What is the probability of getting a number less than 5?
4/6 = 2/3
Data: 4, 6, 6, 7, 9. Find the mode.
6
n is divisible by 4 and 6, and lies between 30 and 40. Find n.
n = 36
A number is multiplied by 3 and then 5 is subtracted, the result is 16. Find the number.
The number is 7
A triangle has two equal angles and one 50° angle. Find the other two angles.
Both of the other two angles are 65°
A coin is tossed twice. What is the chance of getting 1 head and 1 tail?
1/2
Find the median of: 12, 18, 11, 20, 15
15
A number is multiplied by 0.5 and then 8 is added to get 16. What is the number?
The number is 16
Simplify: 4(2x − 1) − 3(x + 2)
5x -10
A rectangle has area 48 cm² and length 12 cm. What is its perimeter?
Since the width is 4 cm, the perimeter is
2 (12 + 4) = 32 cm2
A bag contains 5 red balls and 3 green balls. One is taken. What is the chance of red?
5/8
Calculate the mean of 8, 12, 20, and 24
11
Write 2 numbers in the ratio 5 : 3 with a total of 40.
The numbers are 25 & 15
If a = 2, b = -3, c = 5, calculate ab - c2
The answer is -31
A shape is rotated 90° clockwise. What are the new coordinates of point (3, 2)?
(2, -3)
From 1 to 30, what is the probability of selecting a prime number?
10/30 = 1/3
What is the range of: 5, 8, 10, 15, 25?
20
The sum of three consecutive even numbers is 72. What are the numbers?
The numbers are 23, 24, 25
Given x + y = 12 and x - y = 4, find the values of x and y.
x = 8, y = 4
How big is one angle of a regular hexagon?
120o
Two dice are rolled. How many outcomes give a total of 7?
6/36 = 1/6
A bar chart shows number of students in 5 classes. How do you know which is the largest?
The highest bar