Little kindergarteners must be able to correctly solve subtraction problems and arrive at the correct answer. The alien ship in the middle of this worksheet has the number ‘30’ in it. This means that your students must figure out which of the equations surrounding the alien ship have a difference of 30. Help them trace a line to all of the equations with a difference of 30 in this tracing sheet. To arrive at the answers, your students must do some simple subtraction.