Extra Practice! 
This is a tricky one but it's a good one. I think problems like this help students to really think on a higher level.  
For extra practice and in preparation for Wednesday's test, students are asked to create ten addition/subtraction questions but leave the sign blank, like this:  12_4= 16. 
I think this will not only assist with test prep, but will be a great opportunity to work on those logical reasoning skills.  
 
 
 
          
      
 
  
 
 
 
 
 
 
 
 
 
 
 
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