This tutorial helps students understand the basic concept of adding fractions. Each problem is illustrated with pizza slices and the steps for finding the least common denominator are clear. There is also a video in which students can watch a problem being solved on paper. There are also links to further information about finding the common denominator using two methods (either by multiplying the denominators or finding the least common denominator) and adding mixed fractions.


  • Mathematics > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
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Informal Education,NSDL,Upper Elementary,Grade 4,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-016,Elementary School,Mathematics,oai:nsdl.org:2200/20120614151543370T



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike


Update Standards?

CCSS.Math.Content.5.NF.A.1: Common Core State Standards for Mathematics

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.
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