Data
Find the mean and median amount spent at the shop:
£2.50, £3, 50p, £2.40
Mean: £2.10
Median: £2.45
One of the interior angles in an isosceles triangle is 54°. What size might the other interior angles be?
63° and 63° or 54° and 72°
The circumference of a circle is 66cm. What is its diameter to the nearest centimetre?
21cm
Work out 2x + 7 = 3
x = -2
Write 17:25 in the form n:1
0.68:1
Which average is each person using?
1, 2, 4, 5, 5, 7
Rahul says 5
Lilly says 4
Kai says 4.5
Rahul: Mode
Lily: Mean
Kai: Median
A kite has three identical angles. One of the angles is 75°. What might the other 3 angles be?
95°, 95°, 95° or 75°, 75°, 135°
A right-angled triangle has shorter sides of 9cm and 12cm. What is its perimeter?
36cm
Expand and simplify
(3x + 7)(x - 5)
3x2 - 8x - 35
A 125g yoghurt contains 6g of protein.
How many grams of protein does 200g of yoghurt contain?
9.6g
A scatter graph shows a negative correlation between age and number of hours per day spent on phones.
There is one outlier on the scatter graph.
Why might this be?
What is the sum of the interior angles in a nonagon?
1260°
A quarter-circle has a diameter of 25cm. What is its area to 1dp?
122.7cm2
Solve the inequality
2x + 7 > 31 - x
x > 8
Alex and John are driving home from their holiday.
They share the drive in the ratio 1:3.
John drives 120 miles further than Alex.
How long was the drive home?
160 miles
Here is the salary of six people at a company:
£22000, £22000, £34000, £36000, £38000, £750000
Which average would be the best representation of the "average salary" at the company?
Median
Draw a pair of corresponding angles, a pair of alternate angles, a pair of vertically opposite angles and a pair of co-interior angles.
Angles!
A cube has a volume of 343cm3. What is its surface area?
294cm2
Find the nth term
4, 15, 28, 43, 60
n2 + 8n - 5
Jackie needs to buy 30 chairs.
Chairworld sells sets of 4 chairs for £3.25.
Seatland sells sets of 6 chairs for £5.50.
Which shop is better value, and how much money would Jackie save by shopping there?
Chairworld by £1.50
What is the mean number of pets owned by each student?
Number of pets | Frequency
0 | 2
1 | 4
2 | 7
3 | 2
1.6
How many sides does a regular polygon with 165° interior angles have?
24
The angles in a right-angled triangle are in the ratio 2:3:5.
The side opposite to the smallest angle is 6cm long.
How long is the hypotenuse of the triangle to 1dp?
10.2cm
Solve by factorising
x2 + 12x - 64 = 0
x = -16 and x = 4
An athletics club wins gold, silver and bronze medals.
Gold medals to silver medals = 1:3
Silver medals to bronze medals = 5:3
The athletics club has won 27 bronze medals.
How many medals has the club won in total?
87 (15 gold, 45 silver, 27 bronze)