Magic triangle (2)

This time you can decide the total for the sides of the triangle.

Create my FREE account

including a 7 day free trial of everything

Email Address

Password

Newsletter

The URBrainy email newsletter (sent every 2 weeks) provides resource updates and helpful guides for teaching and learning.

Yes, I would like to receive the URBrainy newsletter.

I agree to the Terms and Conditions and Privacy Policy

Already have an account? Sign in

This challenge is to find as many ways as possible of making 12 using three number cards and the add, subtract and multiply signs.

Can you put the numbers 1 to 9 in the diagram so that the difference between each pair of joined numbers is odd?

Investigation looking at possibilities when adding the digits from 1 to 5.

Solving tricky fraction problems.

The latest news, articles, and resources, sent to your inbox weekly.