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?
This article gives you a few ideas for understanding the Got It! game and how you might find a winning strategy.
What would you do if your teacher asked you add all the numbers from 1 to 100? Find out how Carl Gauss responded when he was asked to do just that.
to those who submitted solutions to this problem. There were plenty
of opportunities to practise calculations, and also to share
Courtenay and Max from Ickford Combined School
looked at the set of fifteen cards, as did Ms Bean's Math Whizzes
from Sylvan Park. They both noticed that the answers are numbers
between $21$ and $35$, and could be arranged in ascending or
descending order. Courtenay and Max explained how they sorted their
Maya, Max, Josh, Amy, Dylan and Imi from Weeke
Primary solved the set of twenty cards:
Well done, and thank you very much to all who