Estimate the number of times you would roll a square number if you roll a fair 6-sided die 150 times.
What is 100 times
100
State the y-intercept of y = 4x - 9
What is (0, -9) or y = -9
100
Find the mean of this data: 4, 5, 3, 5, 6, 3, 8, 9
Round your answer to 1 dp
What is 5.4
200
x/7 - 3 = 4
What is 49
200
The sum of the interior angles of a decagon
What is 1440 degrees
200
A bag contains 3 red counters and 4 blue counters. I draw one counter and put it back in the bag. The I draw another counter. What is the probability that I draw 2 counters of the same colour?
What is (3/7x3/7) + (4/7x4/7) = 25/49
200
State the gradient of the line joining the points (2, 4) and (6, 12)
What is 2
200
10 people are asked their favourite colour. 3 of them say it is yellow. What sector of the circle would yellow take on a pie chart?
What is 36 x 3 = 108 degrees
300
x^2 = 64
What is 8 and - 8
300
The measure of one interior angle of a regular nonagon
What is 140 degrees
300
A bag contains 10 counters - 3 red and 7 blue. I choose one counter and do not put it back in the bag. Then I choose another counter. What is the probability that I choose 2 reds?
What is 1/15
300
State the gradient of a line parallel to x + 2y = 8
What is m = -1/2
300
Calculate the median for this frequency table:
Number of pets 0 1 2 3 4
Frequency 5 7 3 1 3
What is 1 pet
400
x^2 - 7 = 42
What is -7 and 7
400
The measure of one exterior angle of a regular polygon with 14 sides (round to the nearest degree)
What is 180 - 154 = 26 degrees
400
Round 0.000178 to 1 significant figure
What is 0.0002
400
State the gradient of a line perpendicular to the line
y = 5 - 2x
What is 1/2
400
Find the mean number of pets
Number of Pets 0 1 2 3 4
Frequency 5 4 3 2 2
What is 1.5 pets
500
6x^2 - 1 = 23
What is 2 and -2
500
The name given to a polygon with twelve sides
What is a dodecagon
500
Square the 5th prime number and round it to the nearest ten
What is 120
500
If f(x) = x^2 - 5, find f(-1)
What is -4
500
The mean of 6 numbers is 12.3.
When an extra number is added, the mean changes to 11.9.
What is the extra number?