Problem Solving in 5th Class

For Maths today, James’ 5th class were working on their problem solving ability. We were inspired by the ‘Number Sandwiches’ problem (Click here if you want to try it out yourself!).

We were able to solve it with for 3s and 4s, worked out it was impossible for 5s and 6s but no one has solved the 7s yet!

Could you be the first?