Using the digits 1 – 9 (keeping them in order) and using either + or – symbols, how many ways can you find of making 100?

For example:
12+3+4+5-6-7+89=100

 Wow what a brilliant start to your art work, you are showing some good sketching skills! 

During our first week together we have spent a lot of time working on place value and playing dice games.

Which was your favourite and what did it help you to learn?