You may also like

Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Calendar Capers

Choose any three by three square of dates on a calendar page...

Building Tetrahedra

Can you make a tetrahedron whose faces all have the same perimeter?

Funny Factorisation

Age 11 to 16 Challenge Level:

Parts 1 and 2

What are the factors of 4396?

Click the button below if you would like some help getting started with this:

How might finding the prime factorisation of 4396 help you with finding the factors?

Part 3

  * * $9$
$\times$   $4$ *
--- --- --- ---
* $6$ * *

What is the largest that the result of the mulitplication can be?
What is the smallest that the two-digit number can be?
What does this tell you about the three-digit number?

How do the units digits of the two and three-digit numbers determine the units digit of the four-digit number?