Adding Fractions

4th Grade · Math · 45 min· Ccss.math.content.5.nf.a.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.)