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Transformations Tables

These grids are filled according to some rules - can you complete them?

Prime Magic

Place the numbers 1, 2, 3,..., 9 one on each square of a 3 by 3 grid so that all the rows and columns add up to a prime number. How many different solutions can you find?

What Is Ziffle?

Can you work out what a ziffle is on the planet Zargon?

Chocoholics

Age 7 to 11 Challenge Level:

chocolateGeorge and Jim want to buy a chocolate bar.

George needs 2p more and Jim needs 50p more to buy it.

When they put their money together, it is still not enough to pay for the chocolate bar.

 

How much is the chocolate bar?