36351

firstly I write down all the envelope numbers and then I write 0-9 numbers down on a peice of paper and next I worked them out from smallest to largest so first I worked 3 out and I got 0 and 3 and then crossed the numbers off next I worked out the number 7 and got 5 and 2 then crossed them off afterthat I worked out 8 and got 7 and 1 then crossed them off but then I checked if i used the numbers again which I didnt but I double check just in case then I worked out the number 13 and I went to write down 10 and 3 but I realised we wernt allowed to use the number 10 so then I had to think of a different sum and I come up with with 9 and 4 and then I checked if I used them numbers before and I didn't so I carry on with what I was doing an and I only had to do one more number and I only had two more numbers lefted so I checked if the sum added up to 14 and it did and them numbers was 8 and 6 and then I checked it one more last time and it was all right and then i completed my task.