Today’s puzzle is double-sided! It’s a valid arithmetic statement and involves some rich exploration of place value interaction. This is doable by hand and one of the reasons I like it is that it isn’t too hard to stumble into a solution. I think it’s a great puzzle to give to younger students and let them stumble around. Let me know if you try it out with your students. If you have a solution, leave a comment! Bonus challenge: can you find a solution that maximizes the resultant sum?
Were you able to figure out yesterday’s puzzle?
And here’s today’s puzzle! It may be easier to visualize this as two separate stacked additions.
Want a hint?
