If the base and height of a triangle are increased by different percentages, what happens to its area?

6 tiles are placed in a row. What is the probability that no two adjacent tiles have the same letter on them?

A square has area 72 cm$^2$. Find the length of its diagonal.

Work your way through these right-angled triangles to find $x$.

What is the ratio of the areas of the squares in the diagram?

Can you work out the radius of a circle from some information about a chord?

Can you find Dolly Dolphin's average speed as she swims with and against the current?

There are 20 black socks and some white socks in a drawer. Can you work out how many of the socks are white?

Find the missing distance in this diagram with two isosceles triangles

What is the largest that the mean of these numbers could be?

A palm tree has snapped in a storm. What is the height of the piece that is still standing?

A circle of radius 1 is inscribed in a regular hexagon. What is the perimeter of the hexagon?

What will the scale on this map be after it has been photocopied?

Can you find the radius of the circle inscribed inside a '3-4-5 triangle'?

Kevin has moved some tiles to change the shape of his patio from a square to a rectangle. What are the lengths of the sides of the rectangle?

How many barleycorns are there in one inch?

Find the value of $x$ in this equation, where it appears in powers.

These strange dice are rolled. What is the probability that the sum obtained is an odd number?

If some of the audience fell asleep for some of this talk, what was the average proportion of the talk that people heard?

Can you find the depth of water in this aquarium?

What average speed should Ms Fanthorpe drive at to arrive at work on time?

Can you find the value of this expression, which contains infinitely nested square roots?

What is the largest number of intersection points that a triangle and a quadrilateral can have?

Find the value of $m$ from these statements about a group of numbers

How much of the inside of this triangular prism can Clare paint using a cylindrical roller?

Use the information about the triangles on this graph to find the coordinates of the point where they touch.

Two trains started simultaneously, each travelling towards the other. How long did each train need to complete the journey?

Can you find the perimeter of the pentagon formed when this rectangle of paper is folded?

Two ribbons are laid over each other so that they cross. Can you find the area of the overlap?

Can you find the total number of students in the school, given some information about ratios?

A triangle of area 64 square units is drawn inside the parabola $y=k^2-x^2$. Find the value of $k$.

What power of 27 is needed to get the correct power of 3?

What are the possible lengths for the third side of this right-angled triangle?

If the numbers in this news article have been estimated, then what is the largest number of gorillas that there could have been 10 years ago?

The top square has been rotated so that the squares meet at a 60$^\text{o}$ angle. What is the area of the overlap?

On which of the hare's laps will she first pass the tortoise?

Can you find the radius of the larger circle in the diagram?

How much money did the pensioner have before being robbed?

Can you find the gradients of the lines that form a triangle?

From the information given, can you work out how long Roberto drove for after putting petrol in his car?

The area of the small square is $\frac13$ of the area of the large square. What is $\frac xy$?

What percentage of students who graduate have never been to France?

Can you find the length and width of the screen of this smartphone in inches?

If you take a number and add its square to its cube, how often will you get a perfect square?

Yesterday, at Ulaanbaatar market, a white elephant cost the same amount as 99 wild geese. How many wild geese cost the same amount as a white elephant today?