155745

I have 3 strategies I used.
1)You can start by drawing a random line then add up mentally or write it down. However, if you're trying to get 100 don't go straight round the outline because it will be too small.
2)Add the numbers up as you go and make a note of totals when you get to corners. then if you need to make the final answer bigger or smaller you can just go back to the last corner tp change the route.
3)The main thing is even if you don't get it straight away is be creative, resilient and persevere. Don't forget to check your adding!!