Your Solutions - Stage 3 & 4

About Average

Stage: 3 Challenge Level: Challenge Level:1

Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?

Wipeout

Stage: 3 and 4 Challenge Level: Challenge Level:2 Challenge Level:2

Can you do a little mathematical detective work to figure out which number has been wiped out?

Triangles in a Square

Stage: 3 Challenge Level: Challenge Level:1

What are the possible areas of triangles drawn in a square?

Quadrilaterals in a Square

Stage: 4 Challenge Level: Challenge Level:1

What's special about the area of quadrilaterals drawn in a square?

Perimeter Challenge

Stage: 3 Challenge Level: Challenge Level:1

Can you deduce the perimeters of the shapes from the information given?

Garden Shed

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Can you minimise the amount of wood needed to build the roof of my garden shed?

Strange Bank Account (part 2)

Stage: 3 Challenge Level: Challenge Level:1

Investigate different ways of making £5 at Charlie's bank.

Rhombuses from Diagonals

Stage: 3 and 4

Take a look at the video showing rhombuses and their diagonals...

Getting Round the City

Stage: 3 and 4

In a city with a grid system of roads, how do you get from A to B?

Cryptarithms

Stage: 3 Challenge Level: Challenge Level:1

Can you crack these cryptarithms?

Impossibilities

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Just because a problem is impossible doesn't mean it's difficult...

Add to 200

Stage: 3 Challenge Level: Challenge Level:1

By selecting digits for an addition grid, what targets can you make?

Forwards Add Backwards

Stage: 3 Challenge Level: Challenge Level:1

What happens when you add a three digit number to its reverse?

Overlaps

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Can you find ways to put numbers in the overlaps so the rings have equal totals?