Search

problem

Equal lengths

11 to 14

Weekly Problem 29 - 2013
An equilateral triangle is drawn inside a rhombus, both with equal side lengths. What is one of the angles of the rhombus?

problem

Magic W

14 to 16

Find all the ways of placing the numbers 1 to 9 on a W shape, with 3 numbers on each leg, so that each set of 3 numbers has the same total.

problem

Whole numbers only

11 to 14

Can you work out how many of each kind of pencil this student bought?

problem

Scoring with dice

7 to 11

I throw three dice and get 5, 3 and 2. Add the scores on the three dice. What do you get? Now multiply the scores. What do you notice?

problem

Favourite

Odd stones

14 to 16

On a "move" a stone is removed from two of the circles and placed in the third circle. Here are five of the ways that 27 stones could be distributed.

article

Working with Luke

5 to 11

In this article for teachers, Liz Woodham describes conversations with Luke, aged 7, as they worked on some mathematics together.

problem

Favourite

The root of the problem

14 to 18

Find the sum of this series of surds.

problem

Favourite

Almost one

11 to 14

Choose some fractions and add them together. Can you get close to 1?

problem

Favourite

4 dom

5 to 11

Use these four dominoes to make a square that has the same number of dots on each side.

problem

Expanding zeros

11 to 14

Weekly Problem 22 - 2008
The following sequence continues indefinitely... Which of these integers is a multiple of 81?

Or search by topic

Number and algebra

Geometry and measure

Probability and statistics

Working mathematically

Advanced mathematics

For younger learners

Search

Equal lengths

Magic W

Whole numbers only

Scoring with dice

Odd stones

Working with Luke

The root of the problem

Almost one

4 dom

Expanding zeros