13 into 10 best min fragment found: 7/2 Cut up 13 sticks of length 10 like this: 2 x (9/2 + 11/2) 3 x (4 + 6) 8 x (7/2 + 13/2) Reassemble as 10 sticks of length 13 like this: 4 x (13/2 + 13/2) 1 x (4 + 9/2 + 9/2) 2 x (7/2 + 4 + 11/2) 3 x (7/2 + 7/2 + 6)