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Key ConceptsThis page requires the free Adobe® Acrobat® Reader® plug-in for your browser. If you do not have this plug-in, please download and install it by clicking on the logo below. Adding and Subtracting Decimals Adding and Subtracting Fractions with Like Denominators Adding and Subtracting Fractions with Unlike Denominators Log InThe resource you requested requires you to enter a username and password below: | |||