After a typhoon, 13 trees in Haley's backyard died. If she had grown 26 trees initially How many trees does she have left?
1) 13 trees died. This means that Haley had 13 trees to begin with. 
2) Haley had 13 trees to begin with. This means that Haley had 26 trees in total. 
3) Haley had 26 trees in total. This means that Haley has 13 trees left.