Estimating using cubes and matchsticks
Lots of cubes and matchsticks for this tricky little probem.
2 pages
Estimating using cubes and matchsticks
Lots of cubes and matchsticks for this tricky little probem.
![Preview of 'Estimating using cubes and matchsticks'](https://content.urbrainy.com/993/492321907/thumbnail_xlarge/1046_1.png)