my maths prove it

 this is my maths goal: say the number before and after in the range if 0-1000,000 

this is the start of my goal with mrs smith.

then I carried on working with Mrs T over a few days to practise the next level.  The trickiest part was the before part and realising only to change the ones column, not the rest of the whole number.

My Teacher Thinks I'm...