Thomas had a bag with 30 marbles. If 12 of them are red, what is the probability that he will pull a red one out randomly? Common Core: Grade 6 Statistics and Probability: 6.SP.A.1, 6.SPA.2
Converting word problems into equations and solving the equations. Common Core Math: 5.OA.1
Common Core_Math_6.EE.A.1, 6.EE.A.2, 6.EE.A.3,