Fifth Grade Common Core Math Add And Subtract Fractions With Unlike Denominators 5.NF.1 Practice provides two ways for students to practice and show mastery of their ability to add and subtract fractions with unlike denominators.
It includes 40 distinct problems in two sets (129 slides in all!), with and without following answer slides. The PowerPoint file can be used on computers, or Promethean and Smart boards.
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Use equivalent fractions as a strategy to add and subtract fractions.
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.)