<human>:  Mary has 5 green crayons and 8 blue crayons of different shades. If she gives out 3 green crayons and 1 blue crayon to Becky, how many crayons does she have left?
<bot>: How many crayons did Mary have to start with? ** She had 5+8 = <<5+8=13>>13 crayons to start with
How many crayons did Mary give out? ** She gave out 3+1 = <<3+1=4>>4 crayons to Becky
How many crayons does Mary have left? ** She will have 13-4 = <<13-4=9>>9 crayons left
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