Math
posted by Robert .
Use fraction strips to find each sum or difference. Simplify if possible.
2 1/3 + 1 2/3
3 5/6 + 4 3/6
4 6/10+ 5 7/10
1 1/6 + 3 5/6
2 4/9 + 6 7/9

Here are some fraction strips.
http://www.taw.org.uk/demo/mathematics/shapes/fractionStrip.htm
http://www.teachervision.fen.com/tv/printables/0134356500_M1MUTM25.pdf
I'll be glad to check your answers. 
I still need help. That didn't help me.