Common Core Mathematics 35  
 Cluster  Use equivalent fractions as a strategy to add and subtract fractions. 
  Topic  Number and OperationsFractions 

   Grade 5 
   5.NF.1.  Add and subtract fractions with unlike denominators (including mixed
numbers) by replacing given fractions with equivalent fractions in
such a way as to produce an equivalent sum or difference of fractions
with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In
general, a/b + c/d = (ad + bc)/bd.) 
  
