5 steps to 50

Start on any number.  Add or subtract 1, 10 or 100.  Try to get to 50 in 5 step – or as close as possible.

We found some starting numbers got us to 50 in 5 steps and others were impossible.  Some of us plotted all of the starting numbers from 1 to 100 that were possible – what an interesting pattern!

Leave a Reply