Standard
    
    
        - CCSS.Math.Content.4.NF
 - Number and Operations--Fractions
 
        
   
    
    
        - CCSS.Math.Content.4.NF.B
 - Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.
 
        
   
    
    
        - CCSS.Math.Content.4.NF.B.3
 - Understand a fraction a/b with a > 1 as a sum of fractions 1/b.
 
        
   
    
    
        - CCSS.Math.Content.4.NF.B.3d
 - Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.