So to add a sequence of consecutive numbers from 1 to N (where N just stands for any number) we can take that number N, multiply it by the next number up, then halve the answer: 1 2 … 10? 10x11÷2=55 Have a go at adding the numbers up to 20. Drop your answer in the comments to earn your ⭐️ and don’t forget to hit the to let me know if you enjoyed this video. 👉To add a few more tips and tricks to your mathematical toolbox, check out our fantastic bookmarks available on our website at www.sumsofan

❖ Gaussian Elimination / Gauss-Jordan ❖