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Shannon, Ellie, Stephen, Tom and Zachary all at Trinity Middle School, Newport, Isle of Wight found solutions to "Reach 100". Shannon and Ellie realised that the numbers 12, 14, 27 and 47 total 100. Tom and Stephen each suggested a different way the digits could be arranged in the grid:
 
1 2
4 7
1 4
2 7
 
Zachary spotted both of these, and also sent this solution:
2 3
1 8
Kirsty, from St Aldhelms School in Poole, rearranged these digits to make this solution:
2 1
3 8

Lachlan and Ryan, from St Peter Julian Eymard Primary School in Australia, sent in a different solution:
1 5
1 7

Thank you and well done to everyone for sending in your solutions.